Tag Archives: food chain

DigiNotar Breach Notes

Some folk have asked me for more details about the DigiNotar breach after my brief appearance on Al Jazeera this morning. So here are the notes I prepared for the segment. Links at the bottom.

Background

web security certificates are digital IDs issued by companies entrusted with making sure they are given to the right company or organisation. It allows a user to set up a secure connection between their computer and the organisation’s website. Browsers will show a little lock or some other icon to signify the certificate has been found and is trusted.

Hackers broke into a Dutch company called DigiNotar, itself owned by US firm Vasco Data Security, in mid June. DigiNotar is one of hundreds of companies around the globe called certificate authorities that issue these authentication certificates. Browsers contain a list of which CAs they can trust.

These hackers would have been able to steal existing certificates or generate their own, meaning they could now, with the help of an Internet Service Provider, launch what are called Man in the Middle Attacks–meaning they could intercept traffic, a bit like tapping a telephone.

DigiNotar noticed that something was amiss in July, but didn’t realise the extent of the breach until late August, by which time more than 500 (531) fake certificates were issued. While some cover domains like the CIA and MI6, these are probably just distractions. The key ones are a dozen issued for domains like Google, Facebook and Skype.

Why do we think this was about Iran?

Studies of the validation requests–browsers pinging DigiNotar to confirm the certificate’s authenticity–showed that during August the bulk–maybe 99%–of the traffic was coming from Iran. When the certificates were eventually revoked, Iranian activity dropped.

Moreover the attackers left some quite obvious clues. They left calling cards: transcribed Farsi which translates into slogans such as  ”I will sacrifice my life for my leader.” “unknown soldier”

Why might Iran be interested?

Well, we now know that a lot of countries like Syria intercept ordinary Internet traffic through something called Deep Packet Inspection. This means that the government is basically snooping on web traffic. But when that traffic passes through these secure connections, it’s much harder. So the holy grail of any internet surveillance is to get a hold  of those certificates, or work around them. This is a brazen attempt to do this.

All Internet traffic in Iran has to go through a government proxy, making this kind of attack much simpler. The government ISP just uses the certificate to pretend to be Google, or whatever, and then passes the traffic on.

Is it the government?

This is harder to confirm. The Dutch government is investigating this. A similar attack took place against an Italian CA in March, and it shows similar fingerprints.

But the fact that the certificates were stolen and then used seems to suggest some official connection.

What could they have discovered?

Quite a lot. All the traffic that was intercepted could be deciphered.. meaning all browsing and emails. But it also may have captured cookies, meaning passwords, which would have made it easy to hack into target accounts and sniff around old emails, dig out other passwords, or hack into associated accounts, such as Google Docs.

Moreover, some of the certificates compromise something called The Onion Router, a service which anonymizes web traffic. Though TOR itself wasn’t compromised the certificates could convince your browser you were talking to TOR, whereas in fact you’d be talking to the attacker.

Should other people be worried?

Yes, Some browser developers have been more forthcoming than others; Google Chrome and Firefox have been quick to respond. Others less so. If you’re in Iran or think you may be targetted, it’s a good idea to change your password, and to check that no one has altered your forwarding details in your email account. You should also upgrade your browser to the latest version, whatever browser you use.

DigiNotar made some horrible mistakes: one Windows domain for all certificate servers, no antivirus, a simple administrator password. There were defaced pages on the website dating back to 2009. One has to wonder what other certificate authorities are similarly compromised. We rely on these companies to know what they’re doing. They’re the top of the food chain, in the words of one analyst.

We should now be looking closely at the previous breaches and looking for others. This is a ratcheting up of the stakes in a cyberwar; this kind of thing has real world impact on those people who thought they were communicating safely and will now fear the knock on their door.

In the future this is likely to lead to a change in the way certificates are issued and checked. I don’t think DigiNotar is going to survive this, but I think a bigger issue is bound to be how this security issue is handled. I think governments which look to the Internet as a tool for democratic change need also to be aware of just how dangerous it is to encourage dissidents to communicate online, whether or not they’re being careful.

News:

BBC News – Fake DigiNotar web certificate risk to Iranians

DigiNotar – Wikipedia, the free encyclopedia

Fake DigiNotar certificates targeting Iranians?

Expert reports/analysis:

DigiNotar Hacked by Black.Spook and Iranian Hackers – F-Secure Weblog : News from the Lab

Operation Black Tulip: Fox-IT’s report on the DigiNotar breach | Naked Security (Sophos)

Fox-IT report, operation Black Tulip (PDF)

VASCO:

Acquisition DigiNotar

VASCO DigiNotar Statement

Comodogate:

Comodo Group – Wikipedia, the free encyclopediaackground

web security certificates are digital IDs issued by companies entrusted with making sure they are given to the right company or organisation. It allows a user to set up a secure connection between their computer and the organisation’s website. Browsers will show a little lock or some other icon to signify the certificate has been found and is trusted.

 

Hackers broke into a Dutch company called DigiNotar, itself owned by US firm Vasco Data Security, in mid June. DigiNotar is one of hundreds of companies around the globe called certificate authorities that issue these authentication certificates. Browsers contain a list of which CAs they can trust.

 

These hackers would have been able to steal existing certificates or generate their own, meaning they could now, with the help of an Internet Service Provider, launch what are called Man in the Middle Attacks–meaning they could intercept traffic, a bit like tapping a telephone.

 

DigiNotar noticed that something was amiss in July, but didn’t realise the extent of the breach until late August, by which time more than 500 (531) fake certificates were issued. While some cover domains like the CIA and MI6, these are probably just distractions. The key ones are a dozen issued for domains like Google, Facebook and Skype.

 

Why do we think this was about Iran?

 

Studies of the validation requests–browsers pinging DigiNotar to confirm the certificate’s authenticity–showed that during August the bulk–maybe 99%–of the traffic was coming from Iran. When the certificates were eventually revoked, Iranian activity dropped.

 

Moreover the attackers left some quite obvious clues. They left calling cards: transcribed Farsi which translates into slogans such as  “I will sacrifice my life for my leader.” “unknown soldier”

 

Why might Iran be interested?

Well, we now know that a lot of countries like Syria intercept ordinary Internet traffic through something called Deep Packet Inspection. This means that the government is basically snooping on web traffic. But when that traffic passes through these secure connections, it’s much harder. So the holy grail of any internet surveillance is to get a hold  of those certificates, or work around them. This is a brazen attempt to do this.

 

All Internet traffic in Iran has to go through a government proxy, making this kind of attack much simpler. The government ISP just uses the certificate to pretend to be Google, or whatever, and then passes the traffic on.

 

Is it the government?

This is harder to confirm. The Dutch government is investigating this. A similar attack took place against an Italian CA in March, and it shows similar fingerprints.

 

What could they have discovered?

Quite a lot. All the traffic that was intercepted could be deciphered.. meaning all browsing and emails. But it also may have captured cookies, meaning passwords, which would have made it easy to hack into target accounts and sniff around old emails, dig out other passwords, or hack into associated accounts, such as Google Docs.

 

Moreover, some of the certificates compromise something called The Onion Router, a service which anonymizes web traffic. Though TOR itself wasn’t compromised the certificates could convince your browser you were talking to TOR, whereas in fact you’d be talking to the attacker.

 

Should other people be worried?

Yes, Some browser developers have been more forthcoming than others; Google Chrome and Firefox have been quick to respond. Others less so. If you’re in Iran or think you may be targetted, it’s a good idea to change your password, and to check that no one has altered your forwarding details in your email account. You should also upgrade your browser to the latest version, whatever browser you use.

 

DigiNotar made some horrible mistakes: one Windows domain for all certificate servers, no antivirus, a simple administrator password. There were defaced pages on the website dating back to 2009. One has to wonder what other certificate authorities are similarly compromised. We rely on these companies to know what they’re doing. They’re the top of the food chain, in the words of one analyst.

 

We should now be looking closely at the previous breaches and looking for others. This is a ratcheting up of the stakes in a cyberwar; this kind of thing has real world impact on those people who thought they were communicating safely and will now fear the knock on their door.

 

In the future this is likely to lead to a change in the way certificates are issued and checked. I don’t think DigiNotar is going to survive this, but I think a bigger issue is bound to be how this security issue is handled. I think governments which look to the Internet as a tool for democratic change need also to be aware of just how dangerous it is to encourage dissidents to communicate online, whether or not they’re being careful.

More Options For Spam-Free Email

A couple of other options for email users looking to kill off spam, viruses etc.

Walla.com (thanks, Rob) is a free, 1 gigabyte thing with a very simple sign-up process.

Nevada-based Komodo (love the name, love the lizard) said yesterday (PDF file) its “unique email services are being tested internally starting this week”. This is a closely guarded “proprietary solution for email and the elimination of viruses and spam through a unique proprietary application”. Sadly you don’t get any more information than that.

And the name? “As a Komodo client, like the lizard of the same name, you are at the top of the food chain in an impenetrable high-security computing environment.” Ummm, sure.

Branded Blogging – The Next Big Thing?

I spotted this a bit late, but thought it was worth throwing out there.

As you know, I’m a big fan of blogging, and while it’s not always easy to convince those higher up the food chain of their merits, blogs and RSS feeds are part of the future and the sooner we embrace it the better it will be for everyone. For an example of how mainstream they are becoming: I read on the blog of one of Jupiter Research’s analysts, Joe Wilcox (most Jupiter analysts have their own blogs, it seems, and they are quite prolific, in itself an interesting reflection of how blogging is seen in some industries as part of your work, not an adjunct) of the official Spider-Man 2 website of how blogging is becoming a promotional tool.

Not only do the production assistants have their own weblog (admittedly, not updated since May 2003) but they have a ‘how to blog’ page and, most importantly, a page of templates for bloggers. These templates, of course, all contain strong Spider-Man themes (templates are the layouts and backgrounds used on webpages, much like a template in a Word document.) The idea: set up a blog, promote Spider-Man along the way.

Good marketing tactic, of course, but also a sign of how, as Jupiter’s Joe Wilcox points out, mainstream blogging has become. If the big studios are starting to spot this niche, can the other big boys be far behind? Expect to see branding creeping into blogging, and creativity pushed a little to the sidelines. Not something I’m crazy about, but then what happens if content on a ‘branded blog’ displeases the brand owner? If I launch a Spider-Man templated blog saying how awful Spider-Man is, or using offensive content, how long is it before Sony Pictures start knocking on my door, or back off the whole branded blogging thing?