An anonymous reader writes: Anonymous hackers breached the servers of the Brazilian Army, and later leaked the personal details of around 7,000 officers. The incident seems to stem from CTF games where security teams try to hack each other. Apparently the Brazilian Army team used forbidden tactics to win its games, and the hackers responded by doxxing some of their officers. A snippet: According to the hackers' statement, the Brazilian Army team used a forbidden technique to win their CTF matches in a local CTF tournament. The technique they used is WiFi deauth, a simplistic attack that jams WiFi traffic, incapacitating the other team. The hackers also seemed upset at the fact that the Brazilian army was bragging about their accomplishments, being particularly angry at the usage of the word "elite."