21
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 08 Aug 2025
21 points (88.9% liked)
Cybersecurity
8013 readers
301 users here now
c/cybersecurity is a community centered on the cybersecurity and information security profession. You can come here to discuss news, post something interesting, or just chat with others.
THE RULES
Instance Rules
- Be respectful. Everyone should feel welcome here.
- No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia.
- No Ads / Spamming.
- No pornography.
Community Rules
- Idk, keep it semi-professional?
- Nothing illegal. We're all ethical here.
- Rules will be added/redefined as necessary.
If you ask someone to hack your "friends" socials you're just going to get banned so don't do that.
Learn about hacking
Other security-related communities !databreaches@lemmy.zip !netsec@lemmy.world !securitynews@infosec.pub !cybersecurity@infosec.pub !pulse_of_truth@infosec.pub
Notable mention to !cybersecuritymemes@lemmy.world
founded 2 years ago
MODERATORS
Hashing is completely irreversible. You cannot hash an email address and then unhash it. At most you can brute-force guess the email until the hash matches, but this is basically impossible.
Hashing the email address would break one of the main reasons to use an email address - the ability to send emails to users.
Encrypting email addresses is fine, but you wouldnt compare the encrypted data, you'd just decrypt and compare the original email address.
Man, youre totally right and I now feel embarassed i forgot that.