66-848: The Rainbow Series (sometimes known as the Rainbow Books ) is a series of computer security standards and guidelines published by the United States government in the 1980s and 1990s. They were originally published by the U.S. Department of Defense Computer Security Center, and then by the National Computer Security Center . These standards describe a process of evaluation for trusted systems . In some cases, U.S. government entities (as well as private firms) would require formal validation of computer technology using this process as part of their procurement criteria. Many of these standards have influenced, and have been superseded by,
132-587: A big impact on information security in organizations. Cultural concepts can help different segments of the organization work effectively or work against effectiveness toward information security within an organization. Information security culture is the "...totality of patterns of behavior in an organization that contributes to the protection of information of all kinds." Andersson and Reimers (2014) found that employees often do not see themselves as part of their organization's information security effort and often take actions that impede organizational changes. Indeed,
198-476: A colleague, which, when listened to by an attacker, could be exploited. Data transmitted across an "open network" allows an attacker to exploit a vulnerability and intercept it via various methods. Unlike malware , direct-access attacks, or other forms of cyber attacks, eavesdropping attacks are unlikely to negatively affect the performance of networks or devices, making them difficult to notice. In fact, "the attacker does not need to have any ongoing connection to
264-412: A consequence make a Cold boot attack possible, to hardware implementation faults that allow for access or guessing of other values that normally should be inaccessible. In Side-channel attack scenarios, the attacker would gather such information about a system or network to guess its internal state and as a result access the information which is assumed by the victim to be secure. The target information in
330-428: A copy of them, saying "Don't tell them I sent you." Computer security Computer security (also cybersecurity , digital security , or information technology (IT) security ) is the protection of computer software , systems and networks from threats that can lead to unauthorized information disclosure, theft or damage to hardware , software , or data , as well as from the disruption or misdirection of
396-445: A feature of modern computers that allows certain devices, such as external hard drives, graphics cards, or network cards, to access the computer's memory directly." Eavesdropping is the act of surreptitiously listening to a private computer conversation (communication), usually between hosts on a network. It typically occurs when a user connects to a network where traffic is not secured or encrypted and sends sensitive business data to
462-561: A greater or lesser degree (for instance Chancellor of the Duchy of Lancaster or Lord Privy Seal ). The government is sometimes referred to by the metonym " Westminster " or " Whitehall ", as many of its offices are situated there. These metonyms are used especially by members of the Scottish Government , Welsh Government and Northern Ireland Executive to differentiate their government from His Majesty's Government. The United Kingdom
528-476: A malicious code inside a particular HTML or web page. HTML files can carry payloads concealed as benign, inert data in order to defeat content filters . These payloads can be reconstructed on the other side of the filter. When a target user opens the HTML, the malicious code is activated; the web browser then "decodes" the script, which then unleashes the malware onto the target's device. Employee behavior can have
594-478: A member of either House of Parliament. In practice, however, the convention is that ministers must be members of either the House of Commons or the House of Lords to be accountable to Parliament. From time to time, prime ministers appoint non-parliamentarians as ministers. In recent years such ministers have been appointed to the House of Lords. The government is required by convention and for practical reasons to maintain
660-412: A new House of Commons, unless the prime minister advises the monarch to dissolve Parliament , in which case an election may be held sooner. After an election, the monarch selects as prime minister the leader of the party most likely to command the confidence of the House of Commons, usually by possessing a majority of MPs. Under the uncodified British constitution , executive authority lies with
726-439: A new class of multi-vector, polymorphic cyber threats combine several types of attacks and change form to avoid cybersecurity controls as they spread. Multi-vector polymorphic attacks, as the name describes, are both multi-vectored and polymorphic. Firstly, they are a singular attack that involves multiple methods of attack. In this sense, they are “multi-vectored (i.e. the attack can use multiple means of propagation such as via
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#1732844860693792-878: A separate machine filtering network traffic. Firewalls are common amongst machines that are permanently connected to the Internet. Some organizations are turning to big data platforms, such as Apache Hadoop , to extend data accessibility and machine learning to detect advanced persistent threats . United Kingdom Government King Charles III [REDACTED] William, Prince of Wales [REDACTED] Charles III ( King-in-Council ) [REDACTED] Starmer ministry ( L ) Keir Starmer ( L ) Angela Rayner ( L ) ( King-in-Parliament ) [REDACTED] Charles III [REDACTED] [REDACTED] [REDACTED] The Lord Reed The Lord Hodge Andrew Bailey Monetary Policy Committee The government of
858-601: A side channel can be challenging to detect due to its low amplitude when combined with other signals Social engineering , in the context of computer security, aims to convince a user to disclose secrets such as passwords, card numbers, etc. or grant physical access by, for example, impersonating a senior executive, bank, a contractor, or a customer. This generally involves exploiting people's trust, and relying on their cognitive biases . A common scam involves emails sent to accounting and finance department personnel, impersonating their CEO and urgently requesting some action. One of
924-705: A standard computer user may be able to exploit a vulnerability in the system to gain access to restricted data; or even become root and have full unrestricted access to a system. The severity of attacks can range from attacks simply sending an unsolicited email to a ransomware attack on large amounts of data. Privilege escalation usually starts with social engineering techniques, often phishing . Privilege escalation can be separated into two strategies, horizontal and vertical privilege escalation: Any computational system affects its environment in some form. This effect it has on its environment can range from electromagnetic radiation, to residual effect on RAM cells which as
990-594: A substantial grant from the government, the Sovereign Support Grant , and Queen Elizabeth II's inheritance from her mother, Queen Elizabeth The Queen Mother , was exempt from inheritance tax . In addition to legislative powers, His Majesty's Government has substantial influence over local authorities and other bodies set up by it, through financial powers and grants. Many functions carried out by local authorities, such as paying out housing benefits and council tax benefits, are funded or substantially part-funded by
1056-485: A way of filtering network data between a host or a network and another network, such as the Internet . They can be implemented as software running on the machine, hooking into the network stack (or, in the case of most UNIX -based operating systems such as Linux , built into the operating system kernel ) to provide real-time filtering and blocking. Another implementation is a so-called physical firewall , which consists of
1122-447: A wrong password enough consecutive times to cause the victim's account to be locked, or they may overload the capabilities of a machine or network and block all users at once. While a network attack from a single IP address can be blocked by adding a new firewall rule, many forms of distributed denial-of-service (DDoS) attacks are possible, where the attack comes from a large number of points. In this case, defending against these attacks
1188-424: Is a constitutional monarchy in which the reigning monarch (that is, the king or queen who is the head of state at any given time) does not make any open political decisions. All political decisions are taken by the government and Parliament. This constitutional state of affairs is the result of a long history of constraining and reducing the political power of the monarch, beginning with Magna Carta in 1215. Since
1254-471: Is much more difficult. Such attacks can originate from the zombie computers of a botnet or from a range of other possible techniques, including distributed reflective denial-of-service (DRDoS), where innocent systems are fooled into sending traffic to the victim. With such attacks, the amplification factor makes the attack easier for the attacker because they have to use little bandwidth themselves. To understand why attackers may carry out these attacks, see
1320-508: Is not a perfect subset of information security , therefore does not completely align into the security convergence schema. A vulnerability refers to a flaw in the structure, execution, functioning, or internal oversight of a computer or system that compromises its security. Most of the vulnerabilities that have been discovered are documented in the Common Vulnerabilities and Exposures (CVE) database. An exploitable vulnerability
1386-596: Is not vital. A government is not required to resign even if it loses the confidence of the Lords and is defeated in key votes in that House. The House of Commons is thus the responsible house . The prime minister is held to account during Prime Minister's Questions (PMQs) which provides an opportunity for MPs from all parties to question the PM on any subject. There are also departmental questions when ministers answer questions relating to their specific departmental brief. Unlike PMQs, both
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#17328448606931452-439: Is one for which at least one working attack or exploit exists. Actors maliciously seeking vulnerabilities are known as threats . Vulnerabilities can be researched, reverse-engineered, hunted, or exploited using automated tools or customized scripts. Various people or parties are vulnerable to cyber attacks; however, different groups are likely to experience different types of attacks more than others. In April 2023,
1518-494: Is protected by standard security measures, these may be bypassed by booting another operating system or tool from a CD-ROM or other bootable media. Disk encryption and the Trusted Platform Module standard are designed to prevent these attacks. Direct service attackers are related in concept to direct memory attacks which allow an attacker to gain direct access to a computer's memory. The attacks "take advantage of
1584-425: Is spear-phishing which leverages personal or organization-specific details to make the attacker appear like a trusted source. Spear-phishing attacks target specific individuals, rather than the broad net cast by phishing attempts. Privilege escalation describes a situation where an attacker with some level of restricted access is able to, without authorization, elevate their privileges or access level. For example,
1650-607: The Common Criteria . The books have nicknames based on the color of its cover. For example, the Trusted Computer System Evaluation Criteria was referred to as "The Orange Book." In the book entitled Applied Cryptography , security expert Bruce Schneier states of NCSC-TG-021 that he "can't even begin to describe the color of [the] cover" and that some of the books in this series have "hideously colored covers." He then goes on to describe how to receive
1716-473: The Greater London Authority disputed. Similarly, the monarch is immune from criminal prosecution and may only be sued with his permission (this is known as sovereign immunity ). The sovereign, by law, is not required to pay income tax, but Queen Elizabeth II voluntarily paid it from 1993 until the end of her reign in 2022, and also paid local rates voluntarily. However, the monarchy also received
1782-642: The United Kingdom Department for Science, Innovation & Technology released a report on cyber attacks over the last 12 months. They surveyed 2,263 UK businesses, 1,174 UK registered charities, and 554 education institutions. The research found that "32% of businesses and 24% of charities overall recall any breaches or attacks from the last 12 months." These figures were much higher for "medium businesses (59%), large businesses (69%), and high-income charities with £500,000 or more in annual income (56%)." Yet, although medium or large businesses are more often
1848-430: The services they provide. The significance of the field stems from the expanded reliance on computer systems , the Internet , and wireless network standards . Its importance is further amplified by the growth of smart devices , including smartphones , televisions , and the various devices that constitute the Internet of things (IoT). Cybersecurity has emerged as one of the most significant new challenges facing
1914-436: The "practice of designing computer systems to achieve security goals." These goals have overlap with the principles of "security by design" explored above, including to "make initial compromise of the system difficult," and to "limit the impact of any compromise." In practice, the role of a security architect would be to ensure the structure of a system reinforces the security of the system, and that new changes are safe and meet
1980-407: The 'attacker motivation' section. A direct-access attack is when an unauthorized user (an attacker) gains physical access to a computer, most likely to directly copy data from it or steal information. Attackers may also compromise security by making operating system modifications, installing software worms , keyloggers , covert listening devices or using wireless microphones. Even when the system
2046-503: The Crown, who may use them without having to obtain the consent of Parliament. The prime minister also has weekly meetings with the monarch. What is said in these meetings is strictly private; however, they generally involve government and political matters which the monarch has a "right and a duty" to comment on. Such comments are non-binding however and the King must ultimately abide by decisions of
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2112-651: The European Parliament are immune from prosecution in EU states under any circumstance. As a consequence, neither EU bodies nor diplomats have to pay taxes, since it would not be possible to prosecute them for tax evasion. When the UK was a member of the EU, this caused a dispute when the US ambassador to the UK claimed that London's congestion charge was a tax, and not a charge (despite the name), and therefore he did not have to pay it—a claim
2178-566: The United Kingdom , officially His Majesty's Government , abbreviated to HM Government , is the central executive authority of the United Kingdom of Great Britain and Northern Ireland . The government is led by the prime minister (currently Keir Starmer since 5 July 2024) who selects all the other ministers . The country has had a Labour government since 2024. The prime minister Keir Starmer and his most senior ministers belong to
2244-508: The Verizon Data Breach Investigations Report 2020, which examined 3,950 security breaches, discovered 30% of cybersecurity incidents involved internal actors within a company. Research shows information security culture needs to be improved continuously. In "Information Security Culture from Analysis to Change", authors commented, "It's a never-ending process, a cycle of evaluation and change or maintenance." To manage
2310-558: The Web, email and applications." However, they are also multi-staged, meaning that “they can infiltrate networks and move laterally inside the network.” The attacks can be polymorphic, meaning that the cyberattacks used such as viruses, worms or trojans “constantly change (“morph”) making it nearly impossible to detect them using signature-based defences.” Phishing is the attempt of acquiring sensitive information such as usernames, passwords, and credit card details directly from users by deceiving
2376-505: The best form of encryption possible for wireless networks is best practice, as well as using HTTPS instead of an unencrypted HTTP . Programs such as Carnivore and NarusInSight have been used by the Federal Bureau of Investigation (FBI) and NSA to eavesdrop on the systems of internet service providers . Even machines that operate as a closed system (i.e., with no contact with the outside world) can be eavesdropped upon by monitoring
2442-440: The cabinet ministers for the department and junior ministers within the department may answer on behalf of the government, depending on the topic of the question. During debates on legislation proposed by the government, ministers—usually with departmental responsibility for the bill —will lead the debate for the government and respond to points made by MPs or Lords. Committees of both the House of Commons and House of Lords hold
2508-411: The charity commissions) are legally more or less independent of the government, and government powers are legally limited to those retained by the Crown under common law or granted and limited by act of Parliament. Both substantive and procedural limitations are enforceable in the courts by judicial review . Nevertheless, magistrates and mayors can still be arrested and put on trial for corruption, and
2574-436: The confidence of the House of Commons. It requires the support of the House of Commons for the maintenance of supply (by voting through the government's budgets) and to pass primary legislation . By convention, if a government loses the confidence of the House of Commons it must either resign or a general election is held. The support of the Lords, while useful to the government in getting its legislation passed without delay,
2640-513: The contemporary world, due to both the complexity of information systems and the societies they support. Security is particularly crucial for systems that govern large-scale systems with far-reaching physical effects, such as power distribution , elections , and finance . Although many aspects of computer security involve digital security, such as electronic passwords and encryption , physical security measures such as metal locks are still used to prevent unauthorized tampering. IT security
2706-416: The entire computer." Backdoors can be very hard to detect and are usually discovered by someone who has access to the application source code or intimate knowledge of the operating system of the computer. Denial-of-service attacks (DoS) are designed to make a machine or network resource unavailable to its intended users. Attackers can deny service to individual victims, such as by deliberately entering
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2772-409: The exchequer to be a member of the House of Lords was Lord Denman , who served for one month in 1834. The British monarch is the head of state and the sovereign , but not the head of government . The monarch takes little direct part in governing the country and remains neutral in political affairs. However, the authority of the state that is vested in the sovereign, known as the Crown , remains
2838-465: The faint electromagnetic transmissions generated by the hardware. TEMPEST is a specification by the NSA referring to these attacks. Malicious software ( malware ) is any software code or computer program "intentionally written to harm a computer system or its users." Once present on a computer, it can leak sensitive details such as personal information, business information and passwords, can give control of
2904-457: The following sections: Security by design, or alternately secure by design, means that the software has been designed from the ground up to be secure. In this case, security is considered a main feature. The UK government's National Cyber Security Centre separates secure cyber design principles into five sections: These design principles of security by design can include some of the following techniques: Security architecture can be defined as
2970-525: The government has powers to insert commissioners into a local authority to oversee its work, and to issue directives that must be obeyed by the local authority if the local authority is not abiding by its statutory obligations. By contrast, as in European Union (EU) member states, EU officials cannot be prosecuted for any actions carried out in pursuit of their official duties, and foreign country diplomats (though not their employees) and foreign members of
3036-755: The government on the statement. When the government instead chooses to make announcements first outside Parliament, it is often the subject of significant criticism from MPs and the speaker of the House of Commons . The prime minister is based at 10 Downing Street in Westminster , London. Cabinet meetings also take place here. Most government departments have their headquarters nearby in Whitehall . The government's powers include general executive and statutory powers , delegated legislation , and numerous powers of appointment and patronage. However, some powerful officials and bodies, (e.g. HM judges, local authorities , and
3102-477: The government to account, scrutinise its work and examine in detail proposals for legislation. Ministers appear before committees to give evidence and answer questions. Government ministers are also required by convention and the Ministerial Code , when Parliament is sitting, to make major statements regarding government policy or issues of national importance to Parliament. This allows MPs or Lords to question
3168-514: The government. Royal prerogative powers include, but are not limited to, the following: While no formal documents set out the prerogatives, the government published the above list in October 2003 to increase transparency, as some of the powers exercised in the name of the monarch are part of the royal prerogative . However, the complete extent of the royal prerogative powers has never been fully set out, as many of them originated in ancient custom and
3234-490: The information security culture, five steps should be taken: pre-evaluation, strategic planning, operative planning, implementation, and post-evaluation. In computer security, a countermeasure is an action, device, procedure or technique that reduces a threat, a vulnerability, or an attack by eliminating or preventing it, by minimizing the harm it can cause, or by discovering and reporting it so that corrective action can be taken. Some common countermeasures are listed in
3300-449: The life-threatening risk of spoofing in the healthcare industry. Tampering describes a malicious modification or alteration of data. It is an intentional but unauthorized act resulting in the modification of a system, components of systems, its intended behavior, or data. So-called Evil Maid attacks and security services planting of surveillance capability into routers are examples. HTML smuggling allows an attacker to "smuggle"
3366-515: The main techniques of social engineering are phishing attacks. In early 2016, the FBI reported that such business email compromise (BEC) scams had cost US businesses more than $ 2 billion in about two years. In May 2016, the Milwaukee Bucks NBA team was the victim of this type of cyber scam with a perpetrator impersonating the team's president Peter Feigin , resulting in the handover of all
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#17328448606933432-473: The nature of backdoors, they are of greater concern to companies and databases as opposed to individuals. Backdoors may be added by an authorized party to allow some legitimate access or by an attacker for malicious reasons. Criminals often use malware to install backdoors, giving them remote administrative access to a system. Once they have access, cybercriminals can "modify files, steal personal information, install unwanted software, and even take control of
3498-560: The openness of the Internet. These strategies mostly include phishing , ransomware , water holing and scanning. To secure a computer system, it is important to understand the attacks that can be made against it, and these threats can typically be classified into one of the following categories: A backdoor in a computer system, a cryptosystem , or an algorithm is any secret method of bypassing normal authentication or security controls. These weaknesses may exist for many reasons, including original design or poor configuration. Due to
3564-433: The period of absolute monarchy , or were modified by later constitutional practice. As of 2019, there are around 120 government ministers supported by 560,000 civil servants and other staff working in the 24 ministerial departments and their executive agencies . There are also an additional 20 non-ministerial departments with a range of further responsibilities. In theory, a government minister does not have to be
3630-428: The real website. Preying on a victim's trust, phishing can be classified as a form of social engineering . Attackers can use creative ways to gain access to real accounts. A common scam is for attackers to send fake electronic invoices to individuals showing that they recently purchased music, apps, or others, and instructing them to click on a link if the purchases were not authorized. A more strategic type of phishing
3696-476: The right foundation to systematically address business, IT and security concerns in an organization. A state of computer security is the conceptual ideal, attained by the use of three processes: threat prevention, detection, and response. These processes are based on various policies and system components, which include the following: Today, computer security consists mainly of preventive measures, like firewalls or an exit procedure . A firewall can be defined as
3762-432: The security requirements of the organization. Similarly, Techopedia defines security architecture as "a unified security design that addresses the necessities and potential risks involved in a certain scenario or environment. It also specifies when and where to apply security controls. The design process is generally reproducible." The key attributes of security architecture are: Practicing security architecture provides
3828-448: The software at all. The attacker can insert the software onto a compromised device, perhaps by direct insertion or perhaps by a virus or other malware, and then come back some time later to retrieve any data that is found or trigger the software to send the data at some determined time." Using a virtual private network (VPN), which encrypts data between two points, is one of the most common forms of protection against eavesdropping. Using
3894-433: The source of executive power exercised by the government. In addition to explicit statutory authority , the Crown also possesses a body of powers in certain matters collectively known as the royal prerogative . These powers range from the authority to issue or withdraw passports to declarations of war. By long-standing convention, most of these powers are delegated from the sovereign to various ministers or other officers of
3960-642: The sovereign, although this authority is exercised only after receiving the advice of the Privy Council . The prime minister, the House of Lords, the Leader of the Opposition, and the police and military high command serve as members and advisers of the monarch on the Privy Council. In most cases the cabinet exercise power directly as leaders of the government departments , though some Cabinet positions are sinecures to
4026-400: The start of Edward VII 's reign in 1901, by convention, the prime minister has been an elected member of Parliament (MP) and thus answerable to the House of Commons, although there were two weeks in 1963 when Alec Douglas-Home was first a member of the House of Lords and then of neither house. A similar convention applies to the position of chancellor of the exchequer . The last chancellor of
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#17328448606934092-572: The supreme decision-making committee, known as the Cabinet . Ministers of the Crown are responsible to the House in which they sit; they make statements in that House and take questions from members of that House. For most senior ministers this is usually the elected House of Commons rather than the House of Lords . The government is dependent on Parliament to make primary legislation , and general elections are held every five years (at most) to elect
4158-672: The system to the attacker, and can corrupt or delete data permanently. Another type of malware is ransomware , which is when "malware installs itself onto a victim's machine, encrypts their files, and then turns around and demands a ransom (usually in Bitcoin ) to return that data to the user." Types of malware include some of the following: Man-in-the-middle attacks (MITM) involve a malicious attacker trying to intercept, surveil or modify communications between two parties by spoofing one or both party's identities and injecting themselves in-between. Types of MITM attacks include: Surfacing in 2017,
4224-428: The team's employees' 2015 W-2 tax forms. Spoofing is an act of pretending to be a valid entity through the falsification of data (such as an IP address or username), in order to gain access to information or resources that one is otherwise unauthorized to obtain. Spoofing is closely related to phishing . There are several types of spoofing, including: In 2018, the cybersecurity firm Trellix published research on
4290-427: The users. Phishing is typically carried out by email spoofing , instant messaging , text message , or on a phone call. They often direct users to enter details at a fake website whose look and feel are almost identical to the legitimate one. The fake website often asks for personal information, such as login details and passwords. This information can then be used to gain access to the individual's real account on
4356-616: The victims, since larger companies have generally improved their security over the last decade, small and midsize businesses (SMBs) have also become increasingly vulnerable as they often "do not have advanced tools to defend the business." SMBs are most likely to be affected by malware, ransomware, phishing, man-in-the-middle attacks , and Denial-of Service (DoS) Attacks. Normal internet users are most likely to be affected by untargeted cyberattacks. These are where attackers indiscriminately target as many devices, services, or users as possible. They do this using techniques that take advantage of
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