AMSTERDAM — ASML on Wednesday rejected an online claim that the company had been hacked and that internal information was exposed, after a post on BreachForums alleged a data leak, Jan. 7, 2026. The chipmaking equipment supplier said it investigated the allegation and found no evidence that ASML data was exposed, even as the stock briefly softened amid the headlines.
ASML denies BreachForums hack claim
In a statement cited by Reuters, ASML said it was aware of a post published on BreachForums dated Jan. 6 that “alleges the exposure of company information.” The company said its review found the allegation to be false.
“Following a thorough investigation, ASML has concluded that these claims are unfounded. No ASML data was exposed in the referenced documents,” the company said.
How ASML’s response shaped the market reaction
Even with ASML’s denial, traders appeared to price in short-term uncertainty: a market summary published by TradingView said shares declined nearly 1% after the claim circulated, snapping a recent winning streak. For ASML, whose customer list and supply chain sit at the center of the advanced-chip ecosystem, cyber rumors can move quickly because the company’s tools underpin production at many of the world’s biggest chipmakers.
Cybersecurity-focused outlets also flagged signs the claim may have been fabricated. Cybernews reported its researchers reviewed materials tied to the forum post and said the leak narrative did not hold up, describing it as consistent with a pattern of attention-seeking breach claims. UK publication Silicon UK similarly described ASML’s position as a categorical rejection of the purported theft.
Why ASML cyber claims draw extra scrutiny
For ASML, the episode lands in a broader context: the company has faced repeated questions over cyber resilience and intellectual property protection, not only from criminals but also from the standpoint of industrial espionage and export-control compliance.
Past network intrusion disclosure (2015): ASML previously said it discovered unauthorized access to a limited portion of its IT systems and reported no evidence that valuable files were compromised in a 2015 company statement.
Operational disruption (2024): A global IT outage temporarily disrupted work before being resolved, according to a 2024 Reuters report.
IP and insider-risk concerns (2023): ASML disclosed it had discovered misappropriation of confidential information by a now-dismissed employee in China in a 2023 Reuters report.
ASML did not identify any customer impact in its response to the latest allegation. For investors and customers, the key question now is whether further independent evidence emerges beyond the forum post itself — but as of ASML’s investigation, the company says no ASML data was exposed.
