Feeds

Rogue nodes snoop on TOR traffic

Noise on the wire

5 things you didn’t know about cloud backup

Researchers have uncovered more evidence that the TOR anonymiser network is being misused by hackers, and quite likely government intelligence agencies.

TOR (The Onion Router) is a network of proxy nodes set up to provide some privacy and anonymity to its users. Originally backed by the US Naval Research Laboratory, TOR became an Electronic Frontier Foundation (EFF) project three years ago. The system provides a way for whistleblowers and human rights workers to exchange information with journalists, among other things. The system also provides plenty of scope for mischief.

The presence of rogue nodes on the network was recently highlighted by security researcher Dan Egerstad, who controversially posted details of login credentials of about 1,000 email addresses, including at least 100 accounts belonging to foreign embassies, obtained by listening to traffic passing through five exit nodes under his control. Abuse of the system is far from isolated, other research suggests.

Members of the Teamfurry community discovered TOR exit-nodes that only forwards traffic association with ports used for unencrypted versions of protocols including IMAP and POP email (TCP ports 143 and 110), and IM traffic. Other nodes only relay traffic associated with MySpace or Google searches. The malign purposes behind such a system are fairly easy to guess, while their legitimate use is far trickier to imagine.

"Even though just a suspicious configuration isn’t enough to tag an exit-node evil, I wouldn’t touch these with a ten-foot long toothpick," Teamfurry warns.

Another Tor exit node used fake SSL certificates to run man-in-the-middle phishing attacks. Information on the rogue node was forwarded to German authorities, who moved quickly to take down the node. The node was the only one of 400 nodes tested that was running man-in-the-middle attacks, but as net security firm F-Secure notes, it "only takes one".

TOR is set up such that users have little or no idea who controls the exit nodes their data passes through. For this reason encrypting sensitive traffic sent over the network is the first, but not the only, security precaution for using the network. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
One HUNDRED FAMOUS LADIES exposed NUDE online
Celebrity women victimised as Apple iCloud accounts reportedly popped
Rubbish WPS config sees WiFi router keys popped in seconds
Another day, another way in to your home router
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
Attack flogged through shiny-clicky social media buttons
66,000 users popped by malicious Flash fudging add-on
New Snowden leak: How NSA shared 850-billion-plus metadata records
'Federated search' spaffed info all over Five Eyes chums
Three quarters of South Korea popped in online gaming raids
Records used to plunder game items, sold off to low lifes
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.