Security1 distinct publisher2 min readPublished
Kai Wegner has ruled out paying, which leaves a seven-day clock running on 5.79 terabytes the group says it holds. Two Berlin department networks were already offline for days, and the city still cannot say what was in the files.
The Watch · Security desk

Evidence-backed comparisons of source perspectives and observed adoption signals. Read the methodology
Which Builder, Operator, and Investor concerns the observed source mix emphasized—not a truth score.
Follow any of these and your For You feed starts watching them — no settings page required.
Evidence, demonstrated adoption, hype gap, incentives, and confidence are assessed independently, each on its own current evidence. How these are measured.
One outlet, official record firsthand
The parts BBC reports directly are solid and dated: Wegner's refusal, the 7-12 August leak window, the 14 August shutdowns, the further leaks found in transport and environment. The two figures the headline rests on are not its own, with the 30-bitcoin demand coming from Der Spiegel and the 5.79 terabytes from Reuters via the group's own posting.
Service loss the city itself documents
Real-world effect is not in dispute. Two department networks came down on 14 August and residents could not file or receive housing benefits for several days, and forensic work was still surfacing new leaks in another department three weeks later. What remains unmeasured is how many people's records are involved, because Berlin has not finished establishing scope.
The big numbers belong to the extortionist
Rhysida sets the volume at 5.79 terabytes and lists passwords and personnel files among its haul, while the mayor's office will go no further than saying personal data may be affected. BBC keeps that attribution visible throughout, so the inflation risk sits with the leak site rather than the reporting, but the story's most quotable figures are still an anonymous seller's product description.
Auction pricing and a pre-election posture
Rhysida opens the bidding at exactly the sum it demanded from the city, which reads as a sales device more than a valuation, and the countdown exists to make refusal expensive. On the other side, a mayor a month out from an election has every reason to sound immovable, and Spranger's assurance that election systems were untouched is the administration assessing itself while forensics elsewhere keep finding more.
Firm on dates, thin on scope
Official statements, departments and dates can be relied on. The ransom amount, the size of the haul and the contents of it cannot yet, and no second newsroom in our coverage has tested them. Confidence should rise or fall on what Berlin's forensic inquiry publishes about content and scope.
security
Extortionists supply the only itemized count of what left Berlin's state network6 distinct publishers
product
PayPal stopped saying no. Payments teams should now plan for a Stripe-owned checkout rail3 distinct publishers
security
Nearly four in ten breached German companies now name a foreign intelligence service1 distinct publisher
product
State Department letter would make 35 countries pick an AI side, and the workaround already exists1 distinct publisher
Compiled by The WatchSomething wrong?How this is made
Refusal has a documented outcome with this group. Rhysida took around 500,000 files from the British Museum in 2023 and published them on the dark web after the museum declined to pay, including personal data on visitors, subscribers and staff [15]. The same mechanism is now pointed at Berlin, with one detail worth reading closely: the auction starting price on Rhysida's listing is 30 bitcoin, the identical figure demanded from the city, according to Der Spiegel [6]. Wegner never confirmed a sum himself, and the 30-bitcoin number with its rough two-million-euro valuation is Der Spiegel's reporting [3]. A refusal does not make the data go away; it simply moves the same price tag from the city to whoever bids.
Scope remains the city's open question. Officials have confirmed further leaks inside Berlin's transport and environment department [9] and say personal or other non-public data cannot be ruled out [10]. Rhysida's listing is far more specific than that, claiming contracts, non-disclosure agreements, personnel files, passwords and thousands of personal contact details [12]. State police, prosecutors and federal security services are all on the investigation [13], and none of them has publicly named the group the city is dealing with [11].
The containment record holds the wider lesson. It is narrower than it looks. Berlin isolated two department networks on 14 August and lost citizen-facing services for days [8]. The first known leak began 7 August, which puts seven days between earliest exfiltration and shutdown [18]. That seven-day gap governs how much data leaves a network. One city choosing isolation over availability, in one incident, is a record that covers Berlin alone.
Rhysida has claimed hundreds of attacks since it emerged in 2023, against government institutions and businesses of varying sizes in numerous countries [14]. The countdown and the auction are its routine pressure instrument, applied well beyond any single German capital. On that pattern, the order of events to expect is publication ahead of the completion of Berlin's own forensics [5], which means residents learn what was taken from a criminal listing rather than from the city that held it [10].
Ranked by verification strength, evidence, and original report placement.
Rhysida has said on its website that it intends to begin auctioning the 5.79 terabytes of data stolen from Berlin in seven days' time, according to Reuters.
Berlin mayor Kai Wegner said the city is being blackmailed by hackers who compromised city systems and stole data earlier this month.
The ransom demand came on Thursday evening; Wegner said on Friday that officials would not cave in, stating 'Berlin will not be blackmailed'.
The Rhysida group, thought to operate from Russia and eastern Europe, has reportedly taken responsibility for the Berlin attack.
Officials for the city-state said an initial data leak occurred between 7 and 12 August.
On 14 August two department networks were shut down, making applications for housing benefits and payments impossible for several days.
Distinct publishers with included, body-backed reporting in this cluster.
1 article · September 5, 2026