Tag: Data Breach

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Posted on in Links

Data breaches, phishing, or malware? Understanding the risks of stolen credentials

New research from Google:

In this paper, we present the first longitudinal measurement study of the underground ecosystem fueling credential theft and assess the risk it poses to millions of users. Over the course of March, 2016–March, 2017, we identify 788,000 potential victims of off-the-shelf keyloggers; 12.4 million potential victims of phishing kits; and 1.9 billion usernames and passwords exposed via data breaches and traded on blackmarket forums. Using this dataset, we explore to what degree the stolen passwords—which originate from thousands of online services—enable an attacker to obtain a victim’s valid email credentials—and thus complete control of their online identity due to transitive trust. Drawing upon Google as a case study, we find 7–25% of exposed passwords match a victim’s Google account. For these accounts, we show how hardening authentication mechanisms to include additional risk signals such as a user’s historical geolocations and device profiles helps to mitigate the risk of hijacking. Beyond these risk metrics, we delve into the global reach of the miscreants involved in credential theft and the blackhat tools they rely on. We observe a remarkable lack of external pressure on bad actors, with phishing kit playbooks and keylogger capabilities remaining largely unchanged since the mid-2000s.

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Yahoo is expected to confirm a massive data breach, impacting hundreds of millions of users

Recode:

But there’s nothing smooth about this hack, said sources, which became known in August when an infamous cybercriminal named “Peace” claimed on a website that he was selling credentials of 200 million Yahoo users from 2012 on the dark web for just over $1,800. The data allegedly included user names, easily decrypted passwords and personal information like birth dates and other email addresses.

It will be curious (and worrying) to see whether this was a one-off breach or persistent. And, if persistent, whether the data also includes information from users of services like Tumblr.

Aside
Posted on in Aside, Reflections

What Sophisticated Security Tests Should Look Like

Facebook and a few other large corporations understand just how serious contemporary data intrusions and exfiltrations are. They spend a lot of money preparing for attacks. Why, if private companies, are taking collected data so seriously do our governments seem to remain so cavalier with their data collection, retention, and security practices?

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Posted on in Links, Reflections

Viruses stole City College of S.F. data for years

The viral infestation detailed by the Chronicle is horrific in (at least) two ways: first, that data was leeched from university networks for year after year, and second that it’s only now – and perhaps by happenstance – that the IT staff detected the security breach. From the article:

a closer look revealed a far more nefarious situation, which had been lurking within the college’s electronic systems since 1999. For now, it’s still going on. So far, no cases of identify theft have been linked to the breach. That may change as the investigation continues, and college officials said they might need to bring in the FBI.

…

Each night at about 10 p.m., at least seven viruses begin trolling the college networks and transmitting data to sites in Russia, China and at least eight other countries, including Iran and the United States, Hotchkiss and his team discovered. Servers and desktops have been infected across the college district’s administrative, instructional and wireless networks. It’s likely that personal computers belonging to anyone who used a flash drive during the past decade to carry information home were also affected.

Some of the stolen data is probably innocuous, such as lesson plans. But an analysis shows that students and faculty have used college computers to do their banking, and the viruses have grabbed the information, Hotchkiss said.

It is for precisely this kind of reason that regular updates of common, lab-based, computer equipment must be performed. These computers must centrally factor into campus security plans because of their accessibility to the public and a broad student population. I simply cannot believe that systems were so rarely refreshed, so rarely updated, and so poorly secured that a mass infection of a campus could occur, unless a university security and data protection policy were not being implemented by staff. Regardless, what has happened at this campus is an inexcusable failure: lessons should be learned, yes, but heads should damn well roll as well.

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Posted on in Links

Weapons-Grade Data

Cory Doctorow being brilliant in sprucing up the metaphor that personally identifiable data is like nuclear waste. While the metaphor isn’t new, Doctorow does a great job as only a novelist can.

Every gram – sorry, byte – of personal information these feckless data-packrats collect on us should be as carefully accounted for as our weapons-grade radioisotopes, because once the seals have cracked, there is no going back. Once the local sandwich shop’s CCTV has been violated, once the HMRC has dumped another 25 million records, once London Underground has hiccoughup up a month’s worth of travelcard data, there will be no containing it.

And what’s worse is that we, as a society, are asked to shoulder the cost of the long-term care of business and government’s personal data stockpiles. When a database melts down, we absorb the crime, the personal misery, the chaos and terror.