Norway fines Microsoft-owned Xandr 92 million crowns over Grindr users' data shared with advertisers
Norway's data protection authority fined Microsoft's adtech unit Xandr 92 million crowns ($9.6 million) over Grindr data, the largest penalty it has issued. The fine is 1.4 times the 65 million crowns imposed on Grindr itself over the same breaches.
The Investor · Invest desk
Key figures: the data protection authority fined Grindr 65 million crowns over the same breaches in 2021. Xandr's fine came about 6.5 years after the conduct ended in April 2020, after roughly 21 months of conduct. Xandr has three weeks to appeal.
| Figure | Value | Note | Claim |
|---|---|---|---|
| Grindr's own fine over the same breaches, 2021 | 65 million crowns | 6 | |
| Conduct end to fine, about | 6.5 years | 20 | |
| Conduct period, roughly | 21 months | 23 | |
| Time Xandr has to appeal | 3 weeks | 14 |
What happened
- Xandr relayed data revealing the sexual orientation of Grindr users to companies in automated ad auctions from July 2018 to April 2020.
- Xandr said it assumed Grindr had obtained users' consent and never checked, the authority said, and the authority ruled that Xandr shared legal responsibility with Grindr.
- The fine was based on Xandr's revenue, not Microsoft's, because Microsoft did not own the unit at the time.
- The case began with a 2020 complaint from the Norwegian Consumer Council and the Austrian privacy group noyb.
Why it matters
- What it costs cost Conduct that ended in April 2020 drew its fine about 6.5 years later, a gap a buyer of any adtech business has to price into diligence.
- Who's exposed exposure Thousands of advertisers received the Grindr data. If each company needs its own legal basis, as the authority holds, every one of them is as reachable as the relay.
- Who has to decide decision Appealing means contesting the shared-responsibility finding, the part of the decision that applies beyond this fine. Not appealing leaves it standing.
- What it sets up precedent How far the ruling travels depends on Brussels: noyb, which called it a valuable precedent, warns it could lose its effect if the Digital Omnibus weakens the GDPR.
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Datatilsynet's reasoning fits in one sentence. "Responsibility for data protection cannot be delegated to others," Director General Line Coll said in the authority's statement, as quoted by Tech Xplore [8]. According to Cryptopolitan's account, she added that each company must independently ensure, and be able to demonstrate, that it has a legal basis for the data it procures [9]. The authority describes real-time bidding as a sale of ad space in milliseconds as a user opens an app, with the user's data potentially reaching thousands of companies [10]. We think a legal basis that has to be demonstrable for each of those recipients cannot be assembled by hand at that speed, so the working consequence is a consent check inside the bidder's own systems.
Microsoft's answer rests on timing. "This investigation and decision focused on conduct that predates Microsoft's acquisition of Xandr, and in that time the interpretation and application of legal standards and practices has continued to evolve. We are reviewing the decision and assessing our options," Microsoft said [12]. The evolving-standards point has two rulings against it, though neither involved Xandr. Norwegian courts upheld the 65 million crown fine on Grindr in 2025 [7], and the Conseil d'Etat upheld a 40 million euro fine on Criteo earlier in 2026, rejecting Criteo's claim that partner websites were responsible for collecting consent [18]. A Norwegian appeal body has not ruled on Xandr. A reversal of the shared-responsibility finding would undo our reading for Norway, and a payment with no appeal would leave the finding standing.
Against the $3.97 trillion GuruFocus puts on Microsoft [15], $9.61 million is roughly 0.00024 percent [19], or rather 0.00024 percent of a valuation Cryptopolitan took from a single data site. For a bidder the more useful unit is time: 92 million crowns over roughly 21 months of conduct is about 4.4 million crowns, or $458,000, a month [23]. That unit is crude, because the authority also weighed Xandr's direct financial benefit from the sharing [11]. The sources do not put a cost on verifying consent, so whether $458,000 a month is cheap stays unresolved.
What to watch
- Whether Xandr files an appeal inside the three-week window, which on a count from the Oct. 12 announcement ends around Nov. 2.
- Whether another EU data protection authority brings a case against a real-time bidding intermediary on the same shared-responsibility reasoning.
- The text of the European Commission's Digital Omnibus, which noyb says could blunt the precedent.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
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- [1]
Norway's data protection authority fined Microsoft's adtech unit Xandr 92 million crowns ($9.61 million) for unlawfully relaying Grindr users' sensitive data to thousands of advertisers, it said on Monday, Oct 12.
- [2]
It is the biggest fine the Norwegian authority has issued.
- [3]
Xandr relayed data revealing the sexual orientation of users of Grindr, a dating app for LGBTQIA+ people, to companies in automated ad auctions from July 2018 to April 2020.
- [4]
Xandr said it assumed Grindr had obtained users' consent and never checked, the data protection authority said; the authority rejected that argument and ruled Xandr shared legal responsibility with Grindr.
- [5]
The fine was based on Xandr's revenue, not Microsoft's, which did not own the unit at the time.
- [6]
The data protection authority fined Grindr 65 million crowns over the same breaches in 2021.
- [7]
In 2025, Norway's courts upheld a 65 million kroner fine against Grindr for illegally sharing users' sensitive personal information.
- [8]
"Responsibility for data protection cannot be delegated to others," Datatilsynet Director General Line Coll said in the authority's statement.
- [9]
Coll said each company must independently ensure and be able to demonstrate that it has a legal basis for using the data it procures.
- [10]
Real-time bidding sells ad space in milliseconds as a user opens an app; when someone launched Grindr in Norway, their personal data was sent through Xandr and potentially shared with thousands of companies in the advertising industry, according to Datatilsynet.
- [11]
Xandr's direct financial benefit from the data sharing was another key factor in assessing the magnitude of the fine.
- [12]
Microsoft said: "This investigation and decision focused on conduct that predates Microsoft's acquisition of Xandr, and in that time the interpretation and application of legal standards and practices has continued to evolve. We are reviewing the decision and assessing our options,"
- [13]
The case began with a 2020 complaint by the Norwegian Consumer Council and the Austrian data privacy organisation noyb.
- [14]
Xandr has three weeks to appeal.
- [15]
Microsoft is valued at around $3.97 trillion, according to GuruFocus.
- [16]
noyb called the decision "a valuable precedent".
- [17]
noyb warned that the precedent could lose its intended effect if the European Commission's proposed Digital Omnibus weakens how the GDPR treats the matter (the source sentence is cut off after 'treats').
- [18]
Earlier in 2026 in France, the Conseil d'Etat upheld a 40 million euro fine against retargeting company Criteo, rejecting its claim that partner websites were responsible for collecting consent.
- [19]
The $9.61 million fine is roughly 0.00024 percent of a $3.97 trillion valuation.
- [20]
The fine came about 6.5 years after the conduct ended in April 2020.
- [21]
Three weeks counted from the Oct 12 announcement ends around Nov 2.
- [22]
The Xandr fine is about 1.4 times the Grindr fine over the same breaches.
- [23]
Over roughly 21 months of conduct, 92 million crowns is about 4.4 million crowns, or about $458,000, a month.
Sources
7 independent publishers whose own reporting we read for this story.
- bleepingcomputer.comNorway fines Microsoft ad firm $9.6 million over Grindr data sharing
1 article · October 12, 2026
- channelnewsasia.comNorway fines Microsoft's Xandr $9.6 million over Grindr data sharing
1 article · October 12, 2026
- cryptopolitan.comNorway fines Microsoft subsidiary Xandr $9.6 million over privacy violations with Grindr
1 article · October 12, 2026
- engadget.comNorway fined a Microsoft subsidiary $9.6 million for allegedly misusing Grindr user data
1 article · October 12, 2026
- malwarebytes.comGrindr users’ sensitive data shared through ad auctions without valid consent
1 article · October 13, 2026
- scworld.comMicrosoft-owned Xandr fined $9.6 million for unlawful Grindr user data sharing
1 article · October 13, 2026
- thehackernews.comXandr Fined a Record €8.6 Million for Relaying Grindr Data Revealing Sexual Orientation
1 article · October 13, 2026
Topics and entities
Topics
- Real-time bidding
- GDPR Enforcement