Ministry of Sound taken down in DDoS attack

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• Ministry of Sound taken down in DDoS attack
• Money mule arrests highlight banks' efforts to fight fraud
• Iran arrests Stuxnet 'nuclear spies'
• BlackBerry backup encryption broken by Russians
• Subnet masking -II
• Indian opposition party says its web site under attack
• Social engineering via Social networking

Ministry of Sound taken down in DDoS attack Posted: 04 Oct 2010 09:00 AM PDT The Ministry of Sound's website has been taken down following a DDos attack.

Money mule arrests highlight banks' efforts to fight fraud Posted: 04 Oct 2010 09:00 AM PDT The indictments unveiled last week against dozens of people who allegedly helped loot millions of dollars from U.S. businesses via online corporate account takeovers highlights the struggle by financial firms to fight fraud.

Iran arrests Stuxnet 'nuclear spies' Posted: 04 Oct 2010 09:00 AM PDT Iran says it has detained a number of 'nuclear spies' in connection with the Stuxnet malware attacks on its nuclear programme computer systems last week.

BlackBerry backup encryption broken by Russians Posted: 04 Oct 2010 09:00 AM PDT A Russian company that specialises in cracking tools claims it has broken the password protection used to secure data backups from BlackBerry smartphones.

Subnet masking -II Posted: 04 Oct 2010 08:53 AM PDT What we discussed in the previous section is Classful subnet masking. A Subnetmask normally contains the host portion of the bits also. This is called Classless Inter Domain Routing (CIDR). This will enable more networks for a given class of network address. For example, allowing 3 host bits towards subnet portion in our previous IP address, will allow us to offer 2X2X2 or 8 additional subnetworks. Traditionally, all zeros, and all ones subnets are not used, and hence we are left with 6 subnets. 192.189.210.078: 1100 0000.1011 1101.1101 0010.0100 1110 Class C IP Address 255.255.255.224: 1111 1111.1111 1111.1111 1111.1110 0000 Class C subnet mask with 3 additional bits of host portion used for Subnetting. Broadcast address: 1100 0000.1011 1101.1101 0010.0101 1111 :192.189.210.95 The above is the broadcast address for a given subnet (192.189.210.078). Under Classful routing, the broadcast address would have been 192.189.210.255. Note that by using Subnetting, we are able to increase the number of networks available within a given IP address. On the otherhand, we will be loosing the number of hosts available within a subnet to 24  or 16 hosts per subnet. Again, all zeros, and all ones host addresses are traditionally reserved for other purposes. CIDR (Classless InterDomain Routing) notation: Subnet mask is also represented as below: 192.189.210.078/27, where 27 is the number of bits in the network portion of the IP address. Why use CIDR? Normally, ISPs allocate the IP addresses for individuals or Corporates.  The reason being that it is almost impossible to allocate a classful IP address to every individual or a corporate. Using CIDR, the biggest ISPs are given large pool of IP address space. The ISP's customers such as individual or Corporates are then allocated networks from the big ISP's pool. This kind of arrangement will enable efficient management and utilization of the Internet. Classful addresses can easily be written in CIDR notation Class A =  A.B.C.D/8, Class B = A.B.C.D/16, and Class C = A.B.C.D/24 Where A,B,C,D are dotted decimal octets. Example Question: You have an IP of 156.233.42.56 with a subnet mask of 7 bits. How many hosts and subnets are possible? A. 126 hosts and 510 subnets B. 128 subnets and 512 hosts C. 510 hosts and 126 subnets D. 512 subnets and 128 hosts Correct answer: C Explanation: Class B network has the form N.N.H.H, the default subnet mask is 16 bits long. There is additional 7 bits to the default subnet mask. The total number of bits in subnet are 16+7 = 23. This leaves us with 32-23 =9 bits for assigning to hosts. 7 bits of subnet mask corresponds to (2^7-2)=128-2 = 126 subnets. 9 bits belonging to host addresses correspond to (2^9-2)=512-2 = 510 hosts.

Indian opposition party says its web site under attack Posted: 04 Oct 2010 09:00 AM PDT India's political battlefield has moved online, with the main opposition party, Bharatiya Janata Party (BJP), claiming on Monday that its main website at www.bjp.org may be under attack.

Social engineering via Social networking Posted: 04 Oct 2010 09:00 AM PDT Facebook affords opportunities for Internet thieves to invade businesses. In an example provided by network infrastructure provider Terramark (with the victim company and employee names anonymized), hackers hijacked a Facebook account belonging to "Bob," a male employee at a financial institution, and sent a link to an unsuspecting female employee named "Alice" at the same firm.

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