Here's the summary of these hacks:

• Kelp Dao, Drift Protocol, Grinex, Rhea Finance, Wasabi, Volo Protocol, Purrland, CoW Swap, Aethir, Silo Finance, and Scallop were the largest platforms to be hacked.
• A total of $805 million was lost in the attacks.
• Common attacks method included social engineering, compromised keys, fake pools, domain hijacking, and multiwallet bugs.
• North Korea-backed hackers, specifically the Lazarus Group, were a prime suspect behind all these attacks.

Source: BFM Times