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How dangerous hacker attacks are, the recent disturbances at the London Heathrow, Brussels and Berlin airports showed the most dangerous disorders at the weekend.The aim of the cyber attacks was the passenger handling systems of the IT company Collins Aerospace.In Germany there were recently two companies that had to register bankruptcy after hacking attacks.The plant manufacturer and environmental technology specialist Wehrle-Werk from the Black Forest had previously come into economic difficulties, but the interruptions of the company after a hacker attack tightened the crisis.The second bankruptcy case is the Euskirchen napkin manufacturer Fasana, whose work was completely paralyzed after a cyber attack in May. In view of these worrying messages, a current study by Allianz Commercial, which specializes in corporate customers, surprises in the insurance group: many companies could now better protect themselves from cyber attacks.According to their evaluation, the insured damage in the first half of the year has halved compared to the same period last year.Number and volume of the major damage of more than one million euros decreased by 30 or 50 percent. Investments pay off In conversation with the F.A.Z.If Michael Daum, responsible in the Allianz Commercial for cyber damage, attributes the gratifying development to the higher resilience of the companies: "The cyber risks are increasing, but the damage to our insured has decreased significantly. The higher investments of companies are responsible in their IT security, which are increasingly paying off."In many cases, the hackers could enter the company in many cases, but the attacks would be recognized there early and limited the damage.In particular, artificial intelligence (AI), according to Daums, supports the automated detection of attacks. Nevertheless, there is no all -clear for him because the attackers develop and also use AI.In some cases, AI systems could now carry out the attacks independently.It is often also a question of economic performance whether a company can invest in cyber security or not."The companies that do not invest in security fall back," warns Daum.The larger the companies, the more they could invest.The smaller ones, on the other hand, do not, which is why the hackers are increasingly switching to them.Wehrle and Fasana serve as examples."In view of the currently difficult economic situation, cyber attacks can be an existential threat," emphasizes Daum.A difficult economic situation makes companies more difficult to invest in the expensive, increasingly relying cyber defense. Danger from China and Russia The AI ​​is currently giving the companies an advantage in defense against attacks, says Daum.However, you would have to invest in AI-supported detection tools."Do not do that, the AI ​​advantage lies with the attackers."The danger remains high, especially due to foreign secret services.According to a study by the Digitalverband Bitkom published in the previous week, the damage caused by cyber attacks in the past twelve months compared to the same period of the previous year by 70 percent for the first time over the 200 billion euros mark.Of the more than 1000 companies surveyed, 87 percent reported on the theft of data and IT devices, digital and analog industrial espionage or sabotage.A year ago it was 81 percent. Actions that can be followed for Russia or China are becoming increasingly common.Of the companies concerned, 46 percent had found at least one attack from Russia, as much as China."Hybrid warfare by foreign states is not a theoretical danger, it takes place hundreds of times in Germany every day," warns Bitkom President Ralf Wintergerst.For Sinan Selen, Vice President of the Federal Office for the Protection of the Constitution, Germany has been in the target range of Russian actors for years.