When a breach goes from 25 paperwork to 1.3 terabytes… • Graham Cluley


When a breach goes from 25 documents to 1.3 terabytes...


On 7 March 2024, the UK’s Leicester Metropolis Council had its programs disrupted by a devastating cyber assault, forcing it to shut down its IT programs and telephone traces.

Amongst these affected had been care house employees and the homeless.

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By the top of March, the council was “not but in a position to say” if any knowledge had been breached through the assault.

However on Wednesday April 3, Leicester Metropolis Council confirmed that about 25 paperwork had been shared on-line by attackers, together with folks’s confidential data.

Nasty stuff. And the council described the information breach as a “very critical matter.”

Nicely, sure, it’s critical if malicious hackers steal 25 paperwork.

However now we all know that Leicester Metropolis Council’s attackers didn’t restrict themselves to 25 paperwork. The most recent FAQ from the council reveals {that a} gobsmacking 1.3 terabytes of information was stolen through the knowledge breach and printed on the darkish internet.

Council FAQ
A part of Leicester Metropolis council’s FAQ on the information breach

What has occurred and what has the council completed to handle the incident?

Following the cyber incident on 7 March 2024, the ransomware group accountable has printed roughly 1.3 terabytes of information.

We admire that this can be worrying and so we now have created the next FAQs.

What sort of data has been stolen?

We’re reviewing the information that has been printed, the earlier knowledge launch consisted of paperwork together with lease statements, purposes to buy council housing and paperwork associated to this akin to passport particulars.

Because of the quantity of information that has now been printed we can not contact everyone who’s affected. We’re reviewing the information and might be prioritising the folks at highest threat.

And Leicester Metropolis Council can’t rule out the likelihood that but extra knowledge could be leaked sooner or later.

If 25 paperwork stolen is “very critical,” I’m unsure the phrases exist to explain 1.3 terabytes of leaked knowledge…

…or ought to I be saying 3 terabytes? As that’s what the ransomware gang claims it has stolen.

Leicester data leak


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