Cyber attack

200,000+ Systems Affected by WannaCry Ransom Attack

More than 200,000 computers across 150 countries have been affected by a large-scale cyberattack in the past few days. The ransomware WannaCry encrypts information on computers and asks users to pay $300 in exchange for decryption.

According to press reports, the malicious software was first spotted in Russia but rapidly spread across the globe in what might turn out to be an attack of unprecedented scale. The attackers took advantage of a known flaw in Windows XP, the operating system that is still used by millions of PC users and machines across the globe. Microsoft officially stopped providing security support for XP in 2014 but issued an emergency patch in response to the latest attacks.

As our chart illustrates, the $300 ransom asked of users affected by the WannaCry attack is low compared to other attacks in recent years. The average ransom across all attacks known to security software provider Symantec in 2016 was $1,007.

Description

This chart sums up key numbers in relation to the WannaCry cyber attack.

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Most significant ransomware attacks worldwide as of July 2025, by impact
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Annual share of organizations affected by ransomware attacks worldwide from 2018 to 2026
Annual number of ransomware attempts worldwide from 2017 to 2023 (in millions)
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Operating systems with the highest share of ransomware attacks detected worldwide from 2019 to 2023
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Countries most targeted by ransomware attacks in 2022 (in millions)
Number of ransomware attacks resulting in data exposure worldwide in 2020 and 2021

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