[locustous]

You never type sl on accident?

[jabbany]

Surprisingly, no... I thought I would, but somehow I've avoided this particular transpositional mistake (probably also due to my habit of setting up a ll or la macro for ls -l and ls -a).

That said, I also don't actually put "." in my path, though this is mainly so I can avoid heisenbugs rather than a security concern...

[jwilk]

You should install https://github.com/mtoyoda/sl as a hardening measure.