Britain and the United States, which have always played the role of “victims” in the field of network security, have put forward offensive network strategies in order to continuously strengthen their network attack capabilities. This means that the order and stability of global cyberspace will face a greater threat. At the end of September, the U.S. Senate Homeland Security and Government Affairs Committee held an annual hearing on U.S. homeland security and global threats, according to the U.S. Defense one website. In order to counter the “enemy” of the United States in cyberspace, the director of the Federal Bureau of investigation, Christopher ray, said that offensive cyber strategy should be regarded as an equally important means as defensive strategy. He stressed that as part of the new FBI strategy, the strategy would expose “the U.S. enemies in cyberspace to risks and serious consequences.”. In response to senators’ questions, Christopher ray defended offensive cyber strategy by saying “the best defense is attack.”. He said that the FBI will cooperate with other intelligence agencies and the Department of defense to share the intelligence information accumulated in the investigation work, so as to make the network warfare operations of various agencies more offensive. Christopher ray has not forgotten to fight for more resources for the FBI on the ground of strengthening its cyber offensive capability. Analysts point out that the offensive network strategy proposed by Christopher ray is very consistent with the idea of the US Department of defense. The US Defense Science Committee, an advisory group composed of government organizations and private organizations, recently released a report saying that relevant government agencies, including the Department of defense, should take offensive actions in cyberspace. As an ally of the United States, Britain is not willing to lag behind. British Strategic Command commander Patrick Sanders said recently that Britain has developed cyber warfare weapons to “weaken, interfere with and even destroy” key enemy infrastructure and capabilities, such as power grids and communication networks, that attempt to cause damage to the British side, according to Sky News. < p > < p > Sanders said that the British military and the British government communications headquarters work closely together in network attack and defense, and have the ability to attack strategic and tactical enemy targets. He also exaggerates the cyber threats facing Britain today to the “battle of Britain” 80 years ago, calling it a modern “blitz” against Britain. It is said that the British military and government agencies have to deal with millions of network incidents every year, most of which are handled by computer systems, but there are still 60 serious incidents requiring human intervention every day. According to Sanders, the UK’s Cyber Defense has become as important as the RAF’s typhoon fighters on rapid response missions and the Royal Navy’s nuclear submarines that patrol underwater threats. According to reports, the British strategic command was reorganized from the joint forces command in December 2019. In addition to cyber warfare, the command is also responsible for special operations, military intelligence, satellite and digital technology. Although it was established much later than the army, navy and air force command, its position within the British army is becoming more and more important due to its responsibility for emerging technology fields such as cyber warfare, space and unmanned technology. At present, the British strategic command is trying to establish a digital research institute to imitate the relevant institutions in the United States. Sanders said it would “combine expertise in data analysis, machine learning and artificial intelligence, autonomous and robotics, synthesis, quantum technology and 5g networks.”. On the whole, there are great similarities between the United States and the United States in strengthening their network offensive capabilities. Considering the special relationship between the two sides, the military and intelligence agencies of the two countries are likely to conduct multi sectoral and multi agency transnational cooperation in the field of cyber warfare, which will pose a greater threat to the sovereignty of other countries in cyberspace. Whether it is the so-called cyber threat against the United States by the Federal Bureau of investigation, or the so-called modern “blitz war” by the British military, it is no more than an excuse to develop cyber warfare weapons for itself and extend its hegemonic acts to cyberspace, which should arouse the high vigilance of relevant countries.