A Polish technology publication is urging readers to change their PIN codes if they are using commonly chosen combinations. In a report published on 12 September 2026, dobreprogramy.pl warns that certain PINs are easy for attackers to guess and should be replaced as soon as possible.
The outlet's headline directly tells readers who recognise their own code to swap it immediately, framing the issue as one of urgency rather than a routine tip. According to dobreprogramy.pl, holding on to a predictable PIN leaves a device or account exposed, and the recommended response is to pick a different one without delay.
The report does not name specific four-digit sequences, and no list of vulnerable codes is included in the material available. What it does make clear is that the risk comes from the code itself rather than from any single app, bank or device. That framing places the warning in the broader category of weak-credential problems, where the weakness lies in what the user chose rather than in a flaw in the software.
