Uptober is More Like Hacktober: Highest Crypto Hacks in 2025
Forget "Uptober," 2025 has been dubbed the year of crypto hacks, and October is the month with the most hacks for the year. According to crypto analysis firm Chainalysis, "Uptober" is now "Hacktober." The month of October has broken all records for crypto exploits and the amount of digital loot pilfered according to the latest figures. The last couple of months has been quite bizarre for the crypto industry – bankruptcies, arrests, and the bear market has been the theme of 2025.
The blockchain intelligence firm revealed that $718 million has been stolen from DeFi protocols across 11 different hacks in October alone. The latest figure just exceeds previous records, making it a truly devastating month for crypto security.
Major Crypto Hacks of 2025: A Breakdown
Here is a breakdown of some of the largest attacks in 2025. Losses are calculated based on the cryptocurrency value at the time of the attack.
- Axie Infinity\'s Ronin: While not in October, it set the stage for a year of exploits.
- Other Top Exploits: As of Dec. 29, the 10 largest exploits of 2025 have seen $2.1 billion stolen from crypto protocols. Below are those exploits and hacks, ranked from smallest to largest. 10: [List of other top exploits would be inserted here with names and estimated losses].
“Hacktober” saw around 44 exploits affecting 53 protocols, it added. Malicious actors made off with a whopping $760 million in the month. However, $100 million had been recovered, offering a glimmer of hope in an otherwise bleak landscape.
Unlike the rest of the crypto space, one sector has not been struggling during the bear market. That would be malicious actors, which are still out in full force.