Last mentioned: Feb 27, 2026
Tracking Allegations
Reports emerge detailing DHS surveillance of legal observers at enforcement sites.
IRS Ruling
A federal judge rules that the IRS illegally shared 43,000 taxpayer records with DHS.
Campus Arrest
ICE officers arrest a student at Columbia University, sparking widespread protests.
Tech Inquiry
Lawmakers query major tech firms regarding user data provided to DHS.
The Department of Homeland Security is facing allegations of using advanced surveillance technology to track legal observers and human rights advocates. This development follows a series of recent controversies involving unauthorized data sharing and aggressive enforcement actions by the agency.
This page surfaces every story mentioning Columbia University across our cybersecurity coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running cybersecurity beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where Columbia University was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |