A lot of these exploits don't survive an update, power cycling, etc. Some, if they're done well, may also clean up after themselves. Doing digital forensics on

A lot of these exploits don't survive an update, power cycling, etc. Some, if they're done well, may also clean up after themselves. Doing digital forensics on a restrictive mobile device (like an iphone or decent android phone) is difficult. > WhatsApp and Signal must know of this, don't they have some AI tools to fuzz and fix? Sure, but it's not a simple thing. That's why these exploits can go for millions. If it was easy to "fuzz and fix" these exploits would be worth nothing.