TalkTalk Hack: 4% of Customers' Data Accessed In Cyber Security Breach

Amanda Parker writes: TalkTalk has announced that 156,959 customers had their personal details accessed as a result of the recent attack on its website, in which 15,656 bank account numbers and sort codes were stolen. In an update, the firm also said the 28,000 credit and debit card numbers that were accessed were obscured, i.e. had part of the number asterixed out, and so are unusable for financial transactions. They were also "orphaned", says TalkTalk, so customers are unable to be verified by the stolen data.

Comments

customers were "accessed"

[turkeydance]

but TalkTalk was "attacked". vice/versa

In related news....

[Anonymous Coward]

"TalkTalk" is a thing that exists, apparently.

Re:In related news....

[KGIII]

According to someone from the UK, in a previous thread on this subject, TalkTalk is actually large service provider (internet and cellular phone services - as I recal) in the UK with some fairly decent numbers. Though, a quick bit of math in my head indicates this number is only 4,000,000 or slightly less. So, I'm not sure how that relates to the prior comments about the business? Maybe there were only four million customers for this particular service? The prior poster indicated that TalkTalk was 4th in one market and 2nd in the other. Which was which is a memory that is gone - it didn't seem important at the time and isn't important enough for me to actually go to Google and figure out the applicable keywords.

Re:In related news....

[xaxa]

Fixed-line internet and phone, plus IPTV. They are also a virtual mobile operator, I don't think they've got many customers for this.

There are about 27 million households in the UK, so 4 million is a decent portion of the total market.

PCI DSS Compliance

[garlicbready]

One question to ask is, were Talk Talk PCI DSS 3.1 Compliant?
Were they using software for change control, and logging of device event logs?

If your storing credit card data, then these standards require you to use software that recomends locking down kit, and logging via event logs to see who's broken in etc
Also to get the certified you need to be audited by an external auditor, have monthly updates, 3 monthly scans, 6 monthly sotware updates etc.
I can't help but think with all these break ins, it's just piss poor admin / or cheapness that's at fault

Re:PCI DSS Compliance

[garlicbready]

Being an admin myself that's had to lock down kit for PCI DSS standards, these work a little differently

1. First you need to be audited by an external auditor that provides the certificate
If you don't follow the rules then no certification, bribes don't work ether, and most of these guys are really thorough.

2. The network needs to be seperated into DMZ and Protected zones, the credit card data only exists within the Protected zone and there's no direct contact from that zone to the internet, it has to go through a hardware firewall via the DMZ to get to the outside.

3. Typically you install software such as NNT or Tripwire, this monitors every change on the box from dll's being replaced to the smallest change such as Antiirus updates. Filtering and managing this can be a full time job as an admin, usually the software has stuff inbuilt to filter down av updates for example.

4. Next you usually have a set of reports usually built into the same monitoring software that run against all the hardware and check a large number of security settings, most of these can be setup via GPO's some can actually lock it down to the point where the hardware becomes unusable so it can be a comprimise sometimes.

5. Section 10 means that all event logs from all devices need to be captured into a database, this also has a reporting mechanism setup for example if someone tries to brute force the firewall within x minuites or so. minimum storage time is 12 months, also there should be off site backups

6. Every month windows updates need to take place, every 3 months there needs to be scans via software such as Nessus internally, external scans usually via the auditor. Every 6 months a review of the firewall rules, updates to all the software such as cisco firmwares etc.

7. 2 factor authentication is mandatory (yubikey and a password), all access to the kit should also be ip restricted.

8. All code is audited, software devs have to go on training courses, read up on security standards (try googling secure string in C#, or wasp)

The paperwork is horrendous, but it's far from checking boxes, a lot of work has to go into hardening kit for the PCI DSS complaince.
Most of the settings you have to change on the kit to harden it usually originate from ether Nessus scans or the complaince reports run from the monitoring software and there's a lot of it.

Re:PCI DSS Compliance

[khasim]

1. First you need to be audited by an external auditor that provides the certificate
If you don't follow the rules then no certification, bribes don't work ether, and most of these guys are really thorough.

I had the joy of TrustWave auditing systems during a PCI check.

No. "Thorough" is not a word I would use in that situation. They followed a checklist and their involvement began and ended with that checklist.

Every 6 months a review of the firewall rules, updates to all the software such as cisco firmwares etc.

The "review" consisted of matching change requests with rules. As long as there was a request for each rule, they did not care what that rule did.

7. 2 factor authentication is mandatory (yubikey and a password), all access to the kit should also be ip restricted.

2 factor, yes. IP restricted? We passed even though there was access through the wireless network. FROM CHINA. Yes, there was an office in China and it had wireless access and you could connect to the PCI environment from there. Provided you had the 2 factor fob.

The paperwork is horrendous, but it's far from checking boxes, ...

No. It is only checking boxes.

Compliance is not security.

Which is why you're seeing so many sites being cracked. The crackers aren't that good. The security is that bad.

Re:PCI DSS Compliance

[drinkypoo]

If you don't follow the rules then no certification, bribes don't work ether, and most of these guys are really thorough.

How much did you offer them? Since you know bribes don't work, you must have offered one.

Re:PCI DSS Compliance

[xaxa]

In the example you give, shouldn't the bank refund the money (they're the ones trusted to keep it) and the bank chase TalkTalk for compensation?

Re:PCI DSS Compliance

[garlicbready]

The key things are:

1. software that monitors every file change on the system, dll's exe's running apps, running services
2. software that monitors all event logs and emails you when certain patterns emerge such as brute force attempts
3. spending months turning off a gazillion group policy settings, or cisco settings to harden kit
4. Nessus is very good at flagging up open ports / (such as Avira's remote management ports for example), or the fact your not using ldaps for your domain

That is not checking boxes, and that is required to get a certificate
That being said there are different auditors and from a higher management point of view it's going to pay to go with the ones that cause the least amount of hassle
The last auditors we had included an ex police officer and a pro sys admin, the ones we're currently with also study our cisco configs for the switches and the firewalls to generate reports on advisories for stuff to change.

Four percent of customers' data hacked ..

[nickweller]

How do TalkTalk know how many records were downloaded, as TalkTalk didn't even notice when the original hack took place.

Re:Four percent of customers' data hacked ..

[Zaiff Urgulbunger]

How do TalkTalk know how many records were downloaded, as TalkTalk didn't even notice when the original hack took place.

The police have arrested some children and asked them.

Re:Four percent of customers' data hacked ..

[AmiMoJo]

Would they admit to more than the police can prove with Talk Talk's evidence?

Re: Seen much worse, yet SO MUCH press coverage.

[BarbaraHudson]

4%? Big deal. You won't see any changes until the 1% have THEIR data swiped.

Re:Seen much worse, yet SO MUCH press coverage.

[eneville]

Its this sort of of thing that draws attention to government data warehousing projects that have leaky data. Not the sort of thing the government should draw attention to.

asterixed?

[seebs]

Asterixed out: Having little cartoon dudes with magic strength potions drawn over them.