Feeds

Junk mail scumbags in harvesting attack

One man went to mow...

The Power of One eBook: Top reasons to choose HP BladeSystem

Spammers launched a huge number of directory harvesting emails over recent days in an apparent attempt to update their email databases. The attack, which lasted several days, peaked on Sunday, 18 June when web security firm BlackSpider intercepted 109 times more of these malicious emails than it normally intercepts.

The flood of emails, used by spammers to collect valid email addresses, originated from a botnet of more than 90,000 compromised PCs, or 'spambots'. Directory harvesting emails are continuing to circulate but in far fewer numbers. Emails that formed part of the attack contained little or no text and were simply used to verify that email address were valid in cases where email servers didn't reject emails. Junk mail lowlifes then used the addresses in their own campaigns or sold verified lists on at a premium to other spammers.

"It appears that the controllers of botnets are refreshing their address lists for a big spamming push. It’s another example of how useful botnets have become to spammers – why spend time harvesting legitimate email addresses from one PC when you can use thousands of PCs to collate addresses at whim," said James Kay, CTO, BlackSpider Technologies. ®

The Power of One eBook: Top reasons to choose HP BladeSystem

More from The Register

next story
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
BMW's ConnectedDrive falls over, bosses blame upgrade snafu
Traffic flows up 20% as motorway middle lanes miraculously unclog
LibreSSL RNG bug fix: What's all the forking fuss about, ask devs
Blow to bit-spitter 'tis but a flesh wound, claim team
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
Yorkshire cops fail to grasp principle behind BT Fon Wi-Fi network
'Prevent people that are passing by to hook up to your network', pleads plod
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
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.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.