CISO Tribune

Executive record

Chris Castaldo

CISO Tribune executive record: Chris Castaldo, CISO at Flock Safety

Career profile: Chris Castaldo on CISO Spotlights ↗

Chris Castaldo is Chief Information Security Officer (CISO) at Flock Safety. The appointment was announced in the week of December 15, 2025, per SecurityWeek Industry Moves.

Before the appointment: CISO at Crossbeam, per the same source.

1 tracked move on the Wire · Updated

Career timeline

Every move the record holds for Chris Castaldo, newest first, with the earlier roles the announcements name.

  1. · Appointment

    Named Chief Information Security Officer (CISO) at Flock Safety

    Source: SecurityWeek Industry Moves (week of 2025-12-15) ↗ · Move record

  2. Before December 2025· Earlier role

    CISO at Crossbeam

    Named in the announcement of the Flock Safety appointment · Source: SecurityWeek Industry Moves (week of 2025-12-15) ↗

The appointment

Announced week of December 15, 2025 · Source: SecurityWeek Industry Moves (week of 2025-12-15) ↗ · Move record

Chris Castaldo has joined public safety solutions provider Flock Safety as its CISO. He previously served as CISO at Crossbeam and was a fellow at the National Security Institute at the time of the announcement.

Flock Safety says Castaldo will lead its security strategy and work across the organization on governance, risk management and cybersecurity. Flock Safety says the company continues to scale its customer footprint and its platform.

Flock Safety says Castaldo has held the CISO role at Synchronoss Technologies, IronNet Cybersecurity, 2U and Dataminr as well as Crossbeam. As CISO at Crossbeam, Castaldo presented a 101-style breakdown of the company's data sharing controls and security standards, a Crossbeam page says. According to the company, Castaldo wrote the book Start-Up Secure, which outlines a practical approach to building cybersecurity into a company from its earliest stages. The company says he coaches and mentors board members, venture capital firms and founders on growing cybersecurity in step with the business.

Flock Safety says Castaldo started his career in public service. The company says that in the U.S. Army’s Operation Iraqi Freedom he was HUMINT Direct Support to the 5th Special Forces Group, the 101st Airborne Division and the 1st, 2nd and 25th Infantry Divisions. Castaldo later worked in Tailored Access Operations at the National Security Agency, according to the company. According to Flock Safety, Castaldo has a B.S. in Cybersecurity from American Military University and holds many cybersecurity certifications. The company said that, at the time of the announcement, his fellowship at the National Security Institute was at the Antonin Scalia Law School of George Mason University. The company said that, at the time of the announcement, Castaldo was a founding board member of Security Tinkerers and sat on the board of directors of Rallye For Vets, a charity which paid direct medical and housing bills for veterans in need.

Flock Safety says its security measures include default Multi-Factor Authentication for all users, strict encryption standards, and public disclosure and mitigation of vulnerabilities. The company says the frameworks and certifications it adheres to include NIST 800-53, SOC 2 Type II and ISO 27001 compliance certification.

The company: Flock Safety

Company record
Who runs security at Flock Safety: 1 confirmed move on the record

Appointed in the same period

Other security chiefs in Cybersecurity Vendors whose appointment was announced within 90 days of Chris Castaldo's, nearest first. The Cybersecurity Vendors bench

Record facts

Time in the seat
About 11 months since the appointment was announced (week of December 15, 2025), as of November 2026
Moves on the record
1 confirmed move, each with its source
On the record since
September 26, 2026

How these are counted. Time in the seat: Counted in whole months from the announcement of the appointment, the date the record holds; announcements rarely give a start date.

Questions about Chris Castaldo

Who is the CISO of Flock Safety?
Chris Castaldo is Chief Information Security Officer (CISO) at Flock Safety. The appointment was announced in the week of December 15, 2025, per SecurityWeek Industry Moves.
When did Chris Castaldo become CISO of Flock Safety?
The appointment was announced in the week of December 15, 2025, per SecurityWeek Industry Moves. The record holds the announcement, not a start date.
Where did Chris Castaldo work before Flock Safety?
Before the appointment, Chris Castaldo was CISO at Crossbeam, according to the announcement (SecurityWeek Industry Moves).

Sources

  1. 1.SecurityWeek Industry Moves (week of 2025-12-15) ↗: the appointment at Flock Safety, week of December 15, 2025
  2. 2.CISO Spotlights career profile ↗: a fuller career profile on a sister site

This record begins with CISO Tribune's tracking in 2026.

Related guides