Valuable profile data can be leaked to malicious actors by users themselves by mistake, lost due to an account breach, or compromised during a multi-accounting browser database leak.
The latter scenario is highly unlikely, but it does occur occasionally. For example, there was a
leak of 15% of user browser profile data from Dolphin{anty} in July 2022. Typically, such data includes cookie files, passwords saved in profile descriptions, information about cryptocurrency wallets, etc. Such a leak is impossible in Octo Browser, as data of this type is stored in encrypted form.
An additional risk arises when a team uses a multi-accounting browser. In such cases, an impostor within the team may delete, transfer, or misuse the data from profiles for their purposes.