In 2013, over 300,000 usernames, passwords and online credentials were posted to the website Pastebin.com, according to Swiss security firm High-Tech Bridge.
311,095 pairs of username and passwords were posted on Pastebin in 2013. Based on the number of data leaks that were posted on the site, each leak had about 1,000 user credentials on average.
40 percent of the data leaks posted involved email usernames and passwords. Of those emails, 25 percent were Gmail addresses and 22 percent were Yahoo email addresses.
Source: “300,000 compromised accounts available on Pastebin: just the tip of cybercrime iceberg,” High-Tech Bridge, February 18, 2014.