Vulnerabilities / Threats
12/14/2009
04:58 PM
Connect Directly
LinkedIn
Twitter
Google+
RSS
E-Mail
50%
50%

Strong Authentication Not Strong Enough

Cyber thieves are defeating two-factor authentication systems. Gartner recommends defense-in-depth.

Two-factor authentication -- used to protect online bank accounts with both a password and a computer-generated one-time passcode -- is supposed to be more secure than relying on a single password.

But Gartner Research VP Avivah Litan warns that cyber criminals have had success defeating two-factor authentication systems in Web browsing sessions using Trojan-based man-in-the-middle attacks.

A Gartner Research note written by Litan explains that in the past few months, Gartner has heard from many banks around the world that rely on one-time-password authentication systems. Accounts at these banks have been compromised by man-in-the-middle attacks -- the report uses the term "man-in-the-browser" -- despite the use of two-factor security.

One technique that the fraudsters have been using to bypass security controls is call forwarding.

"[B]anks that rely on voice telephony for user transaction verification have seen those systems and processes compromised by thieves who persuade telecom carriers to forward legitimate user phone calls to the thief's cell phone," the report says. "These targeted attacks have resulted in theft of money and/or information, if the bank has no other defenses sufficient to prevent unauthorized access to their applications and customer accounts."

A man-in-the-middle attack involves using software or hardware to intercept network traffic then send it to its destination so that the information can be used without the knowledge of the sender or the intended recipient.

In an e-mail, Litan said that the attacks have involved the Zeus Trojan and other customized malware.

The malware sometimes uses anti-forensic capabilities that re-write account balances in the user's browser, so that the user believes his or her bank account has the funds it should, even through it is empty.

The Gartner report recommends addition defenses to monitor user behavior and/or transaction values, as well as out-of-band transaction verification.

According to the Internet Crime Complaint Center, which issued a warning about attacks on commercial bank accounts in November, total losses as of October amounted to about $100 million so far this year.

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
How To Build An Effective Defense Against Ransomware
A compendium of Dark Reading´s best recent coverage of ransomware attacks, as well as best practices for defending your enterprise against them.
Flash Poll
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-7445
Published: 2015-10-15
The Direct Rendering Manager (DRM) subsystem in the Linux kernel through 4.x mishandles requests for Graphics Execution Manager (GEM) objects, which allows context-dependent attackers to cause a denial of service (memory consumption) via an application that processes graphics data, as demonstrated b...

CVE-2015-4948
Published: 2015-10-15
netstat in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x, when a fibre channel adapter is used, allows local users to gain privileges via unspecified vectors.

CVE-2015-5660
Published: 2015-10-15
Cross-site request forgery (CSRF) vulnerability in eXtplorer before 2.1.8 allows remote attackers to hijack the authentication of arbitrary users for requests that execute PHP code.

CVE-2015-6003
Published: 2015-10-15
Directory traversal vulnerability in QNAP QTS before 4.1.4 build 0910 and 4.2.x before 4.2.0 RC2 build 0910, when AFP is enabled, allows remote attackers to read or write to arbitrary files by leveraging access to an OS X (1) user or (2) guest account.

CVE-2015-6333
Published: 2015-10-15
Cisco Application Policy Infrastructure Controller (APIC) 1.1j allows local users to gain privileges via vectors involving addition of an SSH key, aka Bug ID CSCuw46076.

Dark Reading Radio
Archived Dark Reading Radio
Tim Wilson speaks to two experts on vulnerability research – independent consultant Jeremiah Grossman and Black Duck Software’s Mike Pittenger – about the latest wave of vulnerabilities being exploited by online attackers