Computer 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 the services they provide.
Network security consists of the policies, processes and practices adopted to prevent, detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, which is controlled by the network administrator. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access. Network security is involved in organizations, enterprises, and other types of institutions. It does as its title explains: it secures the network, as well as protecting and overseeing operations being done. The most common and simple way of protecting a network resource is by assigning it a unique name and a corresponding password.
A supply chain attack is a cyber-attack that seeks to damage an organization by targeting less secure elements in the supply chain. A supply chain attack can occur in any industry, from the financial sector, oil industry, to a government sector. A supply chain attack can happen in software or hardware. Cybercriminals typically tamper with the manufacturing or distribution of a product by installing malware or hardware-based spying components. Symantec's 2019 Internet Security Threat Report states that supply chain attacks increased by 78 percent in 2018.
Trellix is a privately held cybersecurity company that was founded in 2022. It has been involved in the detection and prevention of major cybersecurity attacks. It provides hardware, software, and services to investigate cybersecurity attacks, protect against malicious software, and analyze IT security risks.
GhostNet is the name given by researchers at the Information Warfare Monitor to a large-scale cyber spying operation discovered in March 2009. The operation is likely associated with an advanced persistent threat, or a network actor that spies undetected. Its command and control infrastructure is based mainly in the People's Republic of China and GhostNet has infiltrated high-value political, economic and media locations in 103 countries. Computer systems belonging to embassies, foreign ministries and other government offices, and the Dalai Lama's Tibetan exile centers in India, London and New York City were compromised.
Cyber spying, cyber espionage, or cyber-collection is the act or practice of obtaining secrets and information without the permission and knowledge of the holder of the information using methods on the Internet, networks or individual computers through the use of proxy servers, cracking techniques and malicious software including Trojan horses and spyware. Cyber espionage can be used to target various actors- individuals, competitors, rivals, groups, governments, and others- in order to obtain personal, economic, political or military advantages. It may wholly be perpetrated online from computer desks of professionals on bases in far away countries or may involve infiltration at home by computer trained conventional spies and moles or in other cases may be the criminal handiwork of amateur malicious hackers and software programmers.
Operation Aurora was a series of cyber attacks performed by advanced persistent threats such as the Elderwood Group based in Beijing, China, with associations with the People's Liberation Army. First disclosed publicly by Google on January 12, 2010, by a weblog post, the attacks began in mid-2009 and continued through December 2009.
An advanced persistent threat (APT) is a stealthy threat actor, typically a state or state-sponsored group, which gains unauthorized access to a computer network and remains undetected for an extended period. In recent times, the term may also refer to non-state-sponsored groups conducting large-scale targeted intrusions for specific goals.
In computer security, a threat is a potential negative action or event enabled by a vulnerability that results in an unwanted impact to a computer system or application.
Cyberwarfare by China is the aggregate of cyberattacks attributed to the organs of the People's Republic of China and various related advanced persistent threat (APT) groups.
Dmitri Alperovitch is an American think-tank founder, author, philanthropist, podcast host and former computer security industry executive. He is the chairman of Silverado Policy Accelerator, a geopolitics think-tank in Washington, D.C., and a co-founder and former chief technology officer of CrowdStrike. Alperovitch is a naturalized U.S. citizen born in Russia who came to the United States in 1994 with his family.
The following outline is provided as an overview of and topical guide to computer security:
Cozy Bear is a Russian advanced persistent threat hacker group believed to be associated with Russian foreign intelligence by United States intelligence agencies and those of allied countries. Dutch signals intelligence (AIVD) and American intelligence had been monitoring the group since 2014 and was able to link the hacker group to the Russian foreign intelligence agency (SVR) after compromising security cameras in their office. CrowdStrike and Estonian intelligence reported a tentative link to the Russian domestic/foreign intelligence agency (FSB). Various groups designate it CozyCar, CozyDuke, Dark Halo, The Dukes, Midnight Blizzard, NOBELIUM, Office Monkeys, StellarParticle, UNC2452 with a tentative connection to Russian hacker group YTTRIUM. Symantec reported that Cozy Bear had been compromising diplomatic organizations and national governments since at least 2010. Der Spiegel published documents in 2023 purporting to link Russian IT firm NTC Vulkan to Cozy Bear operations.
Night Dragon Operation is one of the cyberattacks that started in mid-2006 and was initially reported by Dmitri Alperovitch, Vice President of Threat Research at Internet security company McAfee in August 2011, who also led and named the Night Dragon Operation and Operation Aurora cyberespionage intrusion investigations. The attacks have hit at least 71 organizations, including defense contractors, businesses worldwide, the United Nations and the International Olympic Committee.
The Lazarus Group is a hacker group made up of an unknown number of individuals, alleged to be run by the government of North Korea. While not much is known about the Lazarus Group, researchers have attributed many cyberattacks to them since 2010. Originally a criminal group, the group has now been designated as an advanced persistent threat due to intended nature, threat, and wide array of methods used when conducting an operation. Names given by cybersecurity organizations include Hidden Cobra and ZINC or Diamond Sleet. According to North Korean defector Kim Kuk-song, the unit is internally known in North Korea as 414 Liaison Office.
The Democratic National Committee cyber attacks took place in 2015 and 2016, in which two groups of Russian computer hackers infiltrated the Democratic National Committee (DNC) computer network, leading to a data breach. Cybersecurity experts, as well as the U.S. government, determined that the cyberespionage was the work of Russian intelligence agencies.
On Friday July 29, 2016 the Democratic Congressional Campaign Committee reported that its computer systems had been infiltrated. It is strongly believed by US intelligence sources that the infiltrator groups are Russian foreign intelligence groups that breached the Democratic National Committee's computer systems. These groups are known as Fancy Bear and Cozy Bear.
A threat actor, bad actor or malicious actor is either a person or a group of people that take part in an action that is intended to cause harm to the cyber realm including: computers, devices, systems, or networks. The term is typically used to describe individuals or groups that perform malicious acts against a person or an organization of any type or size. Threat actors engage in cyber related offenses to exploit open vulnerabilities and disrupt operations. Threat actors have different educational backgrounds, skills, and resources. The frequency and classification of cyber attacks changes rapidly. The background of threat actors helps dictate who they target, how they attack, and what information they seek. There are a number of threat actors including: cyber criminals, nation-state actors, ideologues, thrill seekers/trolls, insiders, and competitors. These threat actors all have distinct motivations, techniques, targets, and uses of stolen data. See Advanced persistent threats for a list of identified threat actors.
A global wave of cyberattacks and data breaches began in January 2021 after four zero-day exploits were discovered in on-premises Microsoft Exchange Servers, giving attackers full access to user emails and passwords on affected servers, administrator privileges on the server, and access to connected devices on the same network. Attackers typically install a backdoor that allows the attacker full access to impacted servers even if the server is later updated to no longer be vulnerable to the original exploits. As of 9 March 2021, it was estimated that 250,000 servers fell victim to the attacks, including servers belonging to around 30,000 organizations in the United States, 7,000 servers in the United Kingdom, as well as the European Banking Authority, the Norwegian Parliament, and Chile's Commission for the Financial Market (CMF).
