: Compressed files from unverified "interesting posts" or forums are common vectors for viruses. In fact, a major zero-day vulnerability in WinRAR (CVE-2023-38831) was recently used to target traders by disguising malicious code within .rar archives.
: Publicly shared "leak" lists are usually years old and full of "spam traps" that can get your email domain blacklisted.
: Italian law requires strict consent for email marketing. Using a list without proof of opt-in can lead to massive fines. Effective Marketing in Italy