Email spam, also referred to as junk email, spam mail, or simply spam, is unsolicited messages sent in bulk by email (spamming). The name comes from a...

Newsgroup spam is a type of spam where the targets are Usenet newsgroups. Usenet convention defines spamming as excessive multiple posting, i.e. repeated...

include a conflict with the Spam Prevention Early Warning System, a Hurricane Katrina relief fund being caught in PayPal's red tape, an exhibition boxing...

in email (email spoofing), a technique often used in phishing and email spam. DKIM allows the receiver to check that an email that claimed to have come...

chain letters forwarded over the Internet, by e-mail spam, or in Usenet newsgroups. In anti-spammer slang, the name is often abbreviated "MMF". The original...

CAPTCHA. The purpose of CAPTCHAs is to prevent spam on websites, such as promotion spam, registration spam, and data scraping. Many websites use CAPTCHA...

angel investor. He cofounded the anti-spam company IronPort, and he was an early advisor and board member at PayPal. Ali Partovi credits him with the conception...

prices via spam e-mail. They found evidence that "stocks experience a significantly positive return on days prior to heavy touting via spam" and that "prolific...

38% being conversational. Pass-along value had 9%, self-promotion 6% with spam and news each making 4%. Despite Jack Dorsey's own open contention that a...

the campaign, PayPal froze Proton Mail's PayPal account, thereby preventing the withdrawal of US$251,721 worth of donations. PayPal stated that the account...