: If you believe it might be legitimate, download it but do not run it . Right-click the file to scan it with an Antivirus or upload it to a service like VirusTotal for analysis.

: If you weren't expecting this specific file from a verified source, delete the email immediately.

: Contact the electricity provider through their official website or phone number— not through any links in the email—to see if they actually sent it.

: Compressed files like .7z are frequently used by attackers to hide malicious executables from basic email scanners.

If the subject "Electricity plan 25.7z" appeared in an unexpected email, it is highly likely a . Security Review