Avatar

Martin Lee

Technical Lead of Security Research within Talos, the threat intelligence and threat response group of Cisco.

Please visit my profile on the Talos blog site.

Articles

December 2, 2013

SECURITY

“Feliz Natal” – Bank Theft by Proxy.

Proxy auto-config or PAC files are commonly used by IT departments to update browser settings so that internet traffic passes through the corporate web gateway. The ability to redirect web traffic to malicious proxy servers is particularly attractive for malicious actors since it gives them a method of intercepting and modifying traffic to and from […]

November 20, 2013

SECURITY

Christmas Packets: Web Browsing and the Festive Period

The web browsing behaviour of users changes as the end of the year approaches. The holiday season can provide a large distraction from work duties that may need to be managed. Equally, even during periods when the office is closed, there will be some individuals who cannot resist accessing work systems. Managing these changes in […]

November 19, 2013

SECURITY

Don’t Click Tired

As the day draws to a close, and especially during the early morning, users become far more likely to click on links that lead to malware. Those responsible for network security need to ensure that users’ awareness of information security continues after work hours, so that users “don’t click tired.”

August 23, 2013

SECURITY

Crumbling to the Cookiebomb

Recently we have seen a spate of government websites hosting malicious Cookiebomb JavaScript. We have observed URLs with the top level domains such as ‘.gov.uk’, ‘.gov.tr’, ‘.gov.pl’ and the website of a middle eastern embassy in the US become compromised and expose visitors to malware infection. For malicious actors, highly reputable websites are a valuable […]

August 15, 2013

SECURITY

The Highs and Lows of the Pump and Dump Scam

The Internet remains an environment where it is important to keep your wits. The recent indictment of nine individuals on stock fraud charges reminds us that the pump and dump scam continues to be perpetrated [1][2]. Stock spam emails were particularly prevalent during the mid-2000’s, with these messages reportedly comprising 15% of all spam in […]

August 8, 2013

SECURITY

DNS Compromise Distributing Malware

DNS records are an attractive target for distributors of malware. By compromising the DNS servers for legitimate domains, attackers are able to redirect visitors to trusted domains to malicious servers under attacker control. DNS requests are served from dedicated servers that may service many thousands of domains. Compromising these servers allows attackers to take over […]

July 29, 2013

SECURITY

Security Implications of Cheaper Storage

An advert from Byte magazine dating from July 1980 proudly offers a 10MB hard disk drive for only US$3495. Accounting for the effects of inflation, that equates to approximately US$10,000 in today’s prices. If data storage prices had remained constant, this would mean that the 1GB flash drive in my pocket would cost in excess […]

July 22, 2013

SECURITY

July, a Busy Month for Breaches

This month has been particularly prevalent for the loss of personal information. At the beginning of the month it was reported that Club Nintendo had been breached with the personal data of up to 4 million stolen by attackers [1]. Subsequently, the forums of Ubuntu were hacked with the loss of 1.82 million usernames, passwords […]

June 27, 2013

SECURITY

Expiring Albert: Recycling User IDs and the Impact on Privacy

Within many organisations offering online services to the public, there must be a great temptation to expire redundant user accounts that occupy desirable user IDs but which are never used by their users. Presumably the user IDs have been registered by someone, used on a couple of occasions, and then forgotten about. Expiring and recycling […]