Cybersecurity

Phish-Proofing URLs in Email?

For those who've been living in an e-mail free cave for the past year, phishing has become a huge problem for banks. Every day I get dozens of urgent messages from a wide variety of banks telling me that I'd better confirm my account info pronto. ...Several people have been floating proposals to extend authentication schemes to the URLs in a mail message. A sender might declare that all of links in it are to its own domain, e.g., if the sender is bigbank.com, all of the links have to be to bigbank.com or maybe www.bigbank.com. Current path authentication schemes don't handle this, but it wouldn't be too hard to retrofit into SPF. ...So the question is, is it worth the effort to make all of the senders and URLs match up? more

Study Finds Spammers Use P2P Harvesting to Spam Millions

A recent study conducted by Blue Security reports how Internet users can unknowingly expose their contacts' emails addresses to Spammers while sharing files, music, games and DVDs over Peer-to-Peer (P2P) networks. The study has uncovered hundreds of incidents where files containing email addresses were made accessible in P2P networks. more

Port 25 Blocking, or Fix SMTP and Leave Port 25 Alone for the Sake of Spam?

Larry Seltzer wrote an interesting article for eWeek, on port 25 blocking, the reasons why it was being advocated, and how it would stop spam. This quoted an excellent paper by Joe St.Sauver, that raised several technically valid and true corollaries that have to be kept in mind when blocking port 25 -- "cough syrup for lung cancer" would be a key phrase... Now, George Ou has just posted an article on ZDNET that disagrees with Larry's article, makes several points that are commonly cited when criticizing port 25 blocking, but then puts forward the astonishing, and completely wrong, suggestion, that worldwide SPF records are going to be a cure all for this problem. Here is my reply to him... more

Creating a National Cybersecurity Framework: Need For New Regulation?

The Congressional Research Service (CRS) recently released a major new study examining cybersecurity. The report, "Creating a National Framework for Cybersecurity: An Analysis of Issues and Options" discusses a variety of significant public and private cybersecurity concerns. The CRS analysis lists several broad options for addressing cybersecurity weaknesses ranging from adopting standards and certification to promulgating best practices and guidelines and use of audits among other measures. more

Whois Privacy vs. Anonymity

The Internet is often a lawless place. Everyone knows that there are many tricks and traps lurking on the Internet, just waiting to prey on unsuspecting and innocent users. Some of these traps will trash your computer while others will turn your PC into a zombie that will broadcast messages at the virus writer's command. ...The list of annoyances and downright criminal activities seem endless. ...To make the Internet a safer place both legislators and law enforcement are now focusing on the Internet. In the crossfire that's taking place there are many ideas that are being offered up. Some of them are good and some are not. One bad decision that was recently forced upon the Internet community (without hearings -- more on this later) was to eliminate private domain name registrations for .US domain names. ...It's important to understand the difference between privacy and anonymity. more

Shambles at the .Pro Registry

Registration of .Pro domains has descended into shambles as the Registry responsible for their administration has allowed a flood of domain registrations which appear to be in breach of the strict rules restricting who can register a .pro domain and the certified credentials required before any such domain can work. more

Protecting Brands from Phishers No Easy Task

Just in case you've been out of the country for the last 12 months, a new scourge is hitting the Internet and the world of email and it's called phishing. The Anti-Phishing Working Group defines phishing as identity theft "attacks using 'spoofed' e-mails and fraudulent Websites designed to fool recipients into divulging personal financial data such as credit card numbers, account usernames and passwords..." According to various experts, the incidents of phishing are rising at an alarming rate: there were 13,000 unique phishing attacks in January alone - that's a 42 percent surge over the previous month. The real problem is that phishing works. more

Protecting the Internet: Certified Attachments and Reverse Firewalls?

In many respects the internet is going to hell in a hand basket. Spam, phishing, DNS poisoning, DDoS attacks, viruses, worms, and the like make the net a sick place. It is bad enough that bad folks are doing this. But it is worse that just about every user computer on the net offers a nice fertile place for such ill behavior to be secretly planted and operated as a zombie under the control of a distant and unknown zombie farmer. ...Some of us are coming to the converse point of view that the net is being endangered by the masses of ill-protected machines operated by users. more

What is ‘Pharming’ and Should You Be Worried?

The sky is falling! The sky is falling! ...or is it? What is this thing called "pharming"? Put simply, it's redirection of web traffic, so that the server you think you're talking to actually belongs to a criminal. For example: you think you're talking to www.examplebank.com because it says so in the browser's address bar, but actually you're connected to www.mafia-R-us.ru. This can happen in three main ways: 1. DNS Hijack: a social engineering attack on the Internet infrastructure... more

Domain Owners Lose Privacy

As facts unfold, and the NTIA's decision to take away our privacy comes to light, it is interesting to see the NTIA struggling to explain its decision. Keep in mind that an "as yet to be identified" bureaucrat made this decision to take away your privacy, did it without notice, and without holding hearings. Those affected were not given an opportunity to explain how the loss of privacy would negatively affect them. Quite simply, this is NOT how our government is supposed to work. We should be outraged... more