[ldite]

Companies/organisations whose data leaks I have discovered through spam to single-use addresses:

  * monster.com
  * linkedin
  * Pragmatic Programmers (pragprog.com)
  * audioscrobbler (now part of last.fm)
  * The London Cycling Campaign
  * The Economist's subscription department

[subbz]

  * Dropbox
  * Adobe
  * ...

The list is long!

[hendersoon]

You need to discern between companies nefariously sharing your email without your permission and those that were the victim of hacks. Dropbox and Adobe were, of course, both thoroughly penetrated and the exfiltrated logins including email addresses are widely available.

These aren't small numbers, either. We're talking about 68 million logins for Dropbox and 150 million for Adobe. To put those huge numbers in perspective, combined that's over half the population of the USA.