Four hacks in a week are too much, even for DeFi.
If people actually used insurance against hacks, this week would definitely have bankrupted a great many insurers. A total of four flash loan-enabled exploits were registered in the span of one week (one of them actually happened the week before, but nobody noticed until later).
In total the hackers stole $18.3 million, which admittedly is not that much — less than the one October exploit of Harvest Finance.
As always, the most common comments on the subject are “were they audited?” and “flash loans are bad.” Now, in terms of auditing, I was able to find reports for all of them except Cheese Bank (maybe it was reviewed, it’s just not immediately obvious).
I feel like a broken record by now,