Domain generation algorithm (DGA) is used by botnets to build a stealthy command and control (C&C) communication channel between the C&C server bots. A DGA can periodically produce large number of pseudo-random algorithmically generated domains (AGDs), few which direct bots server. AGD detection algorithms provide lightweight, promising solution in response existing techniques. In constantly ev...

44 COPUBLISHED BY THE IEEE COMPUTER AND RELIABILITY SOCIETIES ■ 1540-7993/09/$26.00 © 2009 IEEE ■ SEPTEMBER/OCTOBER 2009 T he Domain Name System (DNS) 1 is the Internet’s de facto name resolution system. In fact, almost every transaction performed on the Internet is prefaced by a DNS lookup—for example, when a user types “www.bankofamerica.com” into his or her Web browser, it issues a DNS reque...

Extensions to the Domain Name System (DNS) are described that provide data integrity and authentication to security aware resolvers or applications through the use of cryptographic digital signatures. These digital signatures are included in secured zones as resource records. Security can still be provided even through non-security aware DNS servers in many cases. The extensions also provide fo...

44 COPUBLISHED BY THE IEEE COMPUTER AND RELIABILITY SOCIETIES ■ 1540-7993/09/$26.00 © 2009 IEEE ■ SEPTEMBER/OCTOBER 2009 T he Domain Name System (DNS) 1 is the Internet’s de facto name resolution system. In fact, almost every transaction performed on the Internet is prefaced by a DNS lookup—for example, when a user types “www.bankofamerica.com” into his or her Web browser, it issues a DNS reque...