Ona taky rychlost lámání hesla v raru (brute force attack) je o několik řádů pomalejší než v zipu. A 7-zip je na tom ještě lépe, koukám na http://www.crark.net/crark-7zip.html


(info z roku 2012:)

The rate of password search should be about of 150 password per second on modern powerful computer, so finding the 6-characters password of lower case Latin letters will need about a month. In the GPU the rate could achive 4000 p/s. Rate for dictionary attack is about 50 pass/sec (GPU is not supported ).