Definition: A blacklist is a list of addresses, typically IP addresses, but could also pertain to email addresses among other things, which is rejected or denied access by default. A blacklist of IP addresses known to distribute spam is often used to ban any incoming email from those addresses as a means of combating spam.
Latest posts by Tony Bradley (see all)
- Why Being Bold Matters in Cybersecurity—and Branding - June 3, 2025
- Gear Tested and Approved: My Top Picks for Dads and Grads This Season - May 28, 2025
- A New Reality for Cybersecurity Collaboration - May 15, 2025