n a study published this morning, Comparitech found that ransomware attacks increased by 25 percent in October, rising to 684 in comparison to 546 in September. This is a significant increase in attacks and the third-highest monthly figure in 2025 so far.
Manufacturers continue to see the most attacks, accounting for nearly 19 percent of attacks in October, but only rose 9% from September. In contrast, attacks on the healthcare sector rose significantly, jumping 115%. Other sectors that saw high increases were transportation (109%) and retail (104%).
Key findings for October include:
- 684 attacks in total — 47 confirmed attacks (confirmed by the entity involved)
- Of the 47 confirmed attacks:
- 27 were on businesses
- 10 were on government entities
- 3 were on healthcare companies
- 7 were on educational institutions
- Of the 637 unconfirmed attacks*:
- 561 were on businesses
- 14 were on government entities
- 53 were on healthcare companies
- 8 were on educational institutions
- The most prolific ransomware gangs were Qilin (186), Akira and Sinobi (70 each), INC (32), Play (26), and DragonForce (20)
- Qilin had the most confirmed attacks (10), followed by Clop (4) and RansomHouse (3)
- Where hackers provided the data theft size (in 315 cases), over 162 TB of data was allegedly stolen, an average of 516 GB per breach
- The US saw the most attacks (374), a 33 percent increase from September (282). Australia saw one of the biggest monthly increases in attacks (rising from four to 14), as did Japan (rising from three to 10)
For full details, including more details on the most impacted sectors, most active ransomware gangs, as well as most targeted countries, the full October ransomware roundup can be read here: https://www.comparitech.com/news/ransomware-roundup-october-2025/
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October 2025: Ransomware Attacks Rising 25%
n a study published this morning, Comparitech found that ransomware attacks increased by 25 percent in October, rising to 684 in comparison to 546 in September. This is a significant increase in attacks and the third-highest monthly figure in 2025 so far.
Manufacturers continue to see the most attacks, accounting for nearly 19 percent of attacks in October, but only rose 9% from September. In contrast, attacks on the healthcare sector rose significantly, jumping 115%. Other sectors that saw high increases were transportation (109%) and retail (104%).
Key findings for October include:
For full details, including more details on the most impacted sectors, most active ransomware gangs, as well as most targeted countries, the full October ransomware roundup can be read here: https://www.comparitech.com/news/ransomware-roundup-october-2025/
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This entry was posted on November 4, 2025 at 11:55 am and is filed under Commentary with tags Comparitech. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.