They have also attacked many Internet Relay Chat channels using IRC flooding. GNAA used an old but little known way to force users of the Freenode IRC network to flood IRC channels after going to websites that have malware. They also have used bugs in Firefox to crapflood IRC channels. They have also shown people new bugs and problems. These actions have sometimes stopped the day-to-day working of big websites such as Slashdot, even making some websites (like 4chan) to shut down for a little bit of time.