Bill Zielinski led Dallas' response to a ransomware attack and navigated the fallout after a city information technology employee deleted millions of electronic police records.

Dallas city officials said in a recent presentation that data of 30,000 people was compromised in a recent cyberattack, including some Social Security numbers and other sensitive…

Dallas officials confirmed that files potentially containing Social Security numbers were stolen during a recent cyberattack.

Non-emergency callers to Dallas' 911 system are now asked to hang up and find a computer.

Two months after a ransomware attack, the Dallas City Council approved a nearly $4 million contract for network threat detection.

Courts, utility payments and the animal shelter are back online a month after the ransomware attack on Dallas, city officials said.

The Royal ransomware group has claimed responsibility for more than 150 attacks since last year, including one against the City of Dallas.

The ransomware group known as Royal claimed credit for the incident against Dallas, which resulted in several city services shutting down.

The Dallas Secure app, which alerts about malicious websites, is part of the city's digital equity efforts, city CIO Bill Zielinski said.

Dallas' fire and police departments are trying out what3words, a location technology that uses word sequences to describe precise locations.