Thank you for the interest.

- As long as they use the official work, it will be securely checked and verified.
- If anyone attempts to rewrite, they need to take security seriously too. Just as different implementations of JPEG have different security flaws that need to be taken care of,. And a big reason most will use the official.
- One good point about Pack is that if they use SQLite, almost all will be secure from bad memory access problems, as SQLite is much more tested and reliable.

- SQLite has secure delete too, which does not take much extra time: https://www.sqlite.org/pragma.html#pragma_secure_delete

- Your point about updating, and while doing that, those files are locked by OS. No one can delete them unless they force it.