In-depth

What is cyber warfare?

We explain what cyber warfare is and why you need to pay attention to the threats posed

Weapons of mass destruction is a term we once only thought of in relation to physical entities, whether they were chemical, nukes, or biological weapons. However, in today's threat landscape, it's possible to cause catastrophic damage with a few lines of computer code, if aimed at the right targets.

In recent years, cyber warfare has become a more prevailing threat to governments and businesses. It's common to see reports of suspected state-backed hackers carrying out attacks against other nations.

As governments across the globe become more dependent on technology and systems, the greater the burden on cyber, whether that be defensively or offensively. Since everything, from transport networks to financial services, is reliant on these systems, it's never been easier for a rogue state to interfere with the inner workings of an enemy country. After all, when a hacker can secretly plant dormant malware in a system, only for it to attack at a precise moment, the value of having an army of soldiers and a defensive grid of radar of missiles is significantly diminished - especially when there's no one to aim them at.

Is anyone currently engaged in cyber warfare?

A warning of a Student infection in front of a binary background

The answer to this question, if we use the definition found in the dictionary, is a resounding yes. Just like most Western nations, there are several daily cyber attacks against government organisations and enterprises too. However, are we engaged in a cyber war? Not according to the 'clear and unambiguous' attribution requirement.

There are a number of nations developing cyber weapons to use in future conflicts, including Russia and China. Other countries that are just as active include the US, France, and Israel. This isn't to say that these countries are using these capabilities, although we know they possess the cyber weapons themselves and have used them in the past. For example, Stuxnet was a joint venture between the US and Israel to destroy Iran's nuclear programme capability.

What weapons are used in cyber war?

The tools of destruction used in cyber attacks do bear some resemblance to weapons commonly used in other criminal attacks, in that they incur the same effect.

A bot net

For example, botnets that exist to launch distributed denial of service (DDoS) attacks can target critical services and cripple entities digitally or may even serve as a diversion from other malicious cyber activities, such as attempts to infiltrate the network. Spear phishing and social engineering, too, are techniques also deployed to get cyber criminals closer to the targeted systems. Threats from the inside pose a significant risk for organisations hoping to safeguard their systems against intruders, though are highly potent as far as hackers are concerned, allowing hackers to directly expose a network to a threat, or allow a group to steal sensitive data.

One useful example of how multiple layers of attack can be used to great effect is Stuxnet, which was first encountered ten years ago. An employee situated inside an Iranian nuclear power site inserted a USB stick embedded with the Stuxnet worm, either knowingly or unknowingly, into an air-gapped system. Exploiting multiple zero-day exploits, this malware searched for specific software running centrifuges, and commanded them to spin dangerously fast and then slow for a period of months without being detected. These centrifuges eventually broke and more than 1,000 machines were rendered useless.

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The attack was never successfully blamed on any known party, although it's thought that this cyber weapon was created jointly between the US and Israeli military entities. While neither nation has denied the charge, it's also alleged Stuxnet was played as part of a showreel at the retirement party of the head of the Israeli Defence Force (IDF).

However, cyber warfare can also take a more subtle form. In April, the MI5 issued a warning of foreign agents using LinkedIn to steal information, with more than 10,000 British nationals, including government employees, having been approached by fake LinkedIn profiles associated with hostile states. However, public sector workers aren’t the only targets: in July, the MI5’s director general warned that businesses engaged in export, scientific research, and the high-tech sector should also be aware of the potential risks of falling victim to cyber espionage. These attacks have prompted the Centre for the Protection of National Infrastructure (CPNI) to launch the Think Before You Link campaign, which warns people against accepting messages or connection requests from unknown accounts.

Other examples of cyber warfare

The main UN building with flags of several countries on display

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While Stuxnet is one of the best examples of cyber warfare in action, there are other significant events that can be attributed to state-level attacks.

One recent example comes from Russia - a country that has been accused of many and various state-level cyberattacks. Russia is accused of mounting multiple cyber attacks against Ukraine, including the BlackEnergy attack that cut the power to 700,000 homes in the country in 2015 and the NotPetya malware, which masqueraded as ransomware but was in reality designed purely to destroy the systems it infected.

North Korea, which has been generating headlines over its nuclear posturing and turbulent diplomatic relationship with the US, has also been active in cyber space. According to researchers, the North Korean state has been linked to the prolific and dangerous hacking organisation codenamed HIDDEN COBRA, also known as the Lazarus Group. Both the Sony hack of 2014 and the hack of a Bangladeshi bank in 2016 were pinned on these hackers.

More recently, reports in January 2020 claimed a cyber attack on the United Nations (UN) was the work of state-sponsored hackers. The attack saw hackers compromise at least 40 servers at UN offices in Vienna, Geneva and the UN Office of the High Commissioner for Human rights.

The coronavirus pandemic, as well as the international vaccine effort aimed to tackle it, also gave way to a new kind of cyber warfare focused on targeting public health providers and research facilities. The last 18 months have highlighted the necessity of accessible healthcare as well as the importance of medical research, making it a likely target for state-sponsored cyber criminals. 

During the first UK lockdown, a joint-advisory published by the National Cyber Security Centre (NCSC) and US Cybersecurity and Infrastructure Security Agency (CISA) warned against a wave of password spraying attacks from state-backed hacking groups targeting critical organisations like healthcare bodies and pharmaceutical companies. Although the advisory didn’t name any specific hacking groups nor states, months later, Microsoft found that pharmaceutical companies researching treatments and vaccines for COVID-19 were being actively targeted by hackers sponsored by the Russian and North Korean governments. The groups behind the “unconscionable” attacks were named as Strontium, Zinc, and Cerium, with the three having targeted seven companies, including one clinical research organisation and a company that had developed a virus test.

Although ransomware attacks on healthcare providers can be traced back to long before the pandemic, the last year has magnified these attacks, proving that no target is off-limits for cyber criminals. Attacks on key infrastructure may severely impact the functioning of a state, but attacking hospitals can lead to much more than just financial loss. An example of such was the March 2020 attack on one of the largest coronavirus testing facilities in Czechia, which was forced to temporarily cancel surgeries and transfer new patients to other facilities as it became a target of cyber criminals. In two days after the cyber attack took place, the number of confirmed coronavirus cases in the country more than doubled to 298.

Cyber attacks and hybrid warfare

Increasingly, cyber attacks are being seen as an aspect of what's known as hybrid warfare.As explained by The Conversation, the term hybrid warfare is ill-defined and has changed in meaning over the past ten years or so since it came into use. Increasingly, however, it's used to describe the typical cyber warfare practices laid out here with efforts to disrupt democratic processes.

For example, in the run-up to an election, "Group A" may engage in efforts to alter sentiment through channels like social media while simultaneously targeting the websites of its main competitors, "Group B" and "Group C", with DDoS attacks or cyber vandalism.

Often, it won't be Group A itself that engages in these activities, but instead, it will outsource to companies that specialise in the spreading of disinformation and hackers for hire. This makes it more difficult to trace back.

This is a tactic also seen in state-sponsored cyber attacks, where countries claim an attack originates from "patriotic hackers" acting on their own terms without any persuasion or reward from the state.

Indeed, when it comes to nation-states, we can see another aspect of hybrid cyber warfare when cyber attacks are carried out alongside "kinetic attacks", which is to say traditional warfare tactics like bombs. This is similar to when, in the past, saboteurs would target critical infrastructure ahead of an invasion, only now the attacks can happen remotely.

However, the presence of cyber warfare doesn’t rule out armed conflict in the “real” world. President Joe Biden recently warned that the US could end up in a “shooting war” with a major power as a result of a cyber attack. During a visit to the Office of the Director of National Intelligence in late July 2021, Biden said that he believes that if the US gets involved in “a real shooting war with a major power, it’s going to be as a consequence of a cyber breach of great consequence”. He also went on to describe Russian president Vladimir Putin as “dangerous”, with Russia being previously accused of being behind last year’s SolarWinds cyber attack which saw hackers infiltrate the networks of hundreds of companies as well as nine US governmental agencies. 

This was denied by the head of the Russian Foreign Intelligence Service (SVR), who told the BBC that he is "flattered" by the accusations from US and UK authorities, yet added that he could not "claim the creative achievements of others as his own". Nevertheless, the US responded by imposing trade restrictions on four Russian IT firms as well as two other entities over “aggressive and harmful” activities. 

False flags

The only cyber weapon that is perhaps even more dangerous and disruptive than the zero-day is the false flag. We know that, for example, the attack by the so-called 'Cyber Caliphate' claiming to be affiliated to ISIS on a US military database was a false flag operation by the Russian state-sponsored hacking group APT 28. Why does this matter? Because the US retaliated with kinetic attacks on cyber communication channels and drone strikes against human targets in Syria. 

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