VULNpocalypse
InformationalBreach / campaignMonitoring

Knowles discloses cyber incident in SEC 8-K; details not confirmed

Knowles Corp discloses a cyber incident in an SEC 8-K filing; the exhibit gives no details, so read the filing and await company notices.

Published
Exploitation
No confirmation in the sources; the available exhibit does not describe any incident or exploitation

What happened

According to an SEC EDGAR headline dated 2026-11-10, Knowles Corp discloses a cyber incident in an SEC Form 8-K filing SEC EDGAR: Knowles Corp discloses a cyber incident in an SEC Form 8-K filing. That headline is the only statement of the incident in the material we have.

The document we could read is Exhibit 99.1 to that filing. The exhibit text refers to itself as “this presentation” and covers a company overview, financial performance and capital allocation SEC EDGAR: Exhibit 99.1. Its only cybersecurity reference is generic forward-looking risk language, which lists “disruption caused by a cybersecurity incident, including a cyber-attack, cyber breach, theft, or other unauthorized access” among risks that could cause actual results to differ. The exhibit does not describe a specific incident.

Not confirmed in the sources: when the incident occurred or was discovered, what systems or data were affected, the cause or entry point, whether any threat actor is involved, whether operations were disrupted, and whether any customer or employee data was involved. We do not infer any of these.

Am I affected?

Not confirmed. The available sources do not say who is affected, which systems are involved, or whether any customers, suppliers or individuals are impacted. They name no affected product, version or CVE. If you do business with Knowles, the company itself is the only party that can say whether you are affected.

What to do now

  1. Read the main body of the Form 8-K on SEC EDGAR. It was not part of the material we reviewed, and it is where a company’s description of an incident would normally appear.
  2. If you are a Knowles customer or supplier, watch for direct communication from Knowles and follow any instructions it gives.
  3. Do not treat this as confirmed data theft, ransomware or system compromise. The sources do not state any of that.
  4. We will update this advisory if the filing or the company provides further details.

Sources