Seudat mitzvah 7:37). It is customary at a "bar mitzvah" meal for parents to give thanks and praise to God for giving them the merit to raise a child to "bar mitzvah" and to educate him in the ways of Torah and the commandments. Rabbi Ovadiah Yosef holds that a Bat Mitzvah is also a seudat mitzvah. Based on the Talmud and Midrash, the "seudah" celebration upon the completion of a Talmudic tractate is considered a "seudat mitzvah" ("Yam Shel Shlomo", "Bava Kamma", "Merubah" 37; "Maharam Mintz" 119; "Shach", "Yoreh De'ah" 246:37). This "seudah" is made to rejoice over the accomplishment, and
Bar mitzvah attack attack is named after the bar mitzvah ceremony which is held at 13 years of age, because the vulnerability exploited is 13 years old and likely inspired by the naming of the unrelated birthday attack. Bar mitzvah attack The bar mitzvah attack is an attack on the SSL/TLS protocols that exploits the use of the RC4 cipher with weak keys for that cipher. While this affects only the first hundred or so bytes of only the very small fraction of connections that happen to use weak keys, it allows significant compromise of user security, for example by allowing the interception