If you accidentally clicked the file, immediately disconnect from the internet and run a full system scan using reputable antivirus software.

Did you expect a "prototype" from this person? Even if the name looks familiar, hackers often spoof (fake) email addresses.

Use your email provider's "Report Phishing" or "Report Spam" button to help protect others.

The phrase is frequently associated with phishing attempts and malicious email attachments. In Polish, "Plik" translates to "File," making the full name "File: Prototype.zip."