[ollien]

I can think of at least one legitimate reason to block the dev console. There are these posts I've seen over the years that say to "press the hotkey to open the Javascript console, and paste this Javascript blob" (obviously in much more persuading terms) to get a discount on RayBands or something. Disabling it prevents a possible information leak vector.

[alexjplant]

There's a legitimate reason for doing _almost anything_ - it's a question of likelihood, impact, and knock-on effects.

I can only imagine how much taxpayer money has been set on fire by developers having to debug single-page applications running on these systems without the aid of Dev Tools... these types of material wastages are created in an imperfect attempt to prevent the mere possibility of something that could be more effectively mitigated through training and web content filtering.

[_fat_santa]

I've never seen one in the wild, thought it would be interesting to see what they want you to paste into the console, probably something to transmit them your session token. I know Facebook has a huge warning about it when you open devtools on their site.

[ollien]

Yeah - they added that warning because of these precise things. I haven't kept one around but I've definitely seen them since I fell for it many, many years ago.