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Cybersecurity News Today
3 headlines on Cybersecurity cleared our tape in the last 7 days with a measured price reaction attached. 1 of them moved the underlying at least 0.35% within fifteen minutes. The largest measured reaction was +0.53% on TENB at Aug 31, 15:00 ET.
What moved — last 7 days
| Time | Ticker | Headline | 1 min | 15 min | Volume |
|---|---|---|---|---|---|
| Sep 2, 12:15 ET | PANW | Piper Sandler Reiterates Overweight on Palo Alto Networks, Raises Price Target to $410 | -0.31% | -0.28% | — |
| Sep 1, 13:31 ET | PANW | Stocks making the biggest moves midday: Palo Alto Networks, Fervo Energy, Chevron, Apple & more - CNBC | +0.05% | -0.16% | — |
| Aug 31, 15:00 ET | TENB | Reported: Tenable partners with White House initiative Project Watershed to enhance cybersecurity for U.S. water systems. | -0.05% | +0.53% | — |
Moves are measured against the price two minutes before each headline crossed, using validated 1-minute bars captured at publish time. A dash means no bar was available for that window. Times are New York ET.
Our analysis
A Short Seller Says AI Tools Are Commoditizing Tenable's Core Business. Tenable Isn't Responding
Hunterbrook Capital published a short report on Tenable Holdings on August 7, 2026, arguing that AI-assisted open-source tools are commoditizing the vulnerability scanning and detection work …
Hackers Talked Their Way Into Three Levi Strauss Computers — Then Took Corporate Data
Levi Strauss & Co. disclosed on August 7, 2026 that an unauthorized third party used a social engineering attack to gain access to three company-issued computers …
China Opened a Cybersecurity Review Into Palo Alto Networks on August 6, 2026 — the Same Legal Tool It Used to Ban Micron in 2023
China's Cybersecurity Review Office announced a formal review of Palo Alto Networks products on August 6, 2026, invoking the same legal authority it used against Micron …
Why Is Palo Alto Networks (PANW) Stock Moving Today? China Opened a Security Review Into Its Products
China's Cybersecurity Review Office opened a formal review into Palo Alto Networks products on August 6, 2026, under the same legal authority it used against Micron …
Why Is Qualys Stock Up Today?
A beat on both lines, plus a full-year guidance raise across revenue and EPS that points to accelerating enterprise security budgets.
Why Is OneSpan Stock Up Today?
A beat and a guidance raise, alongside a new unified authentication platform built for the passkey era.