Workers in the transportation sector are among the most vulnerable to phishing emails and the ransomware attack on San Francisco's light rail system over the Thanksgiving weekend showed the impact cybercriminals can have on municipal transportation systems.
In the attack that took down computers at the San Francisco Municipal Transportation Agency over the weekend no firewalls were breached — a worker invited the hackers in.
It takes just one employee to click on a malicious link or email attachment to infect a computer, which if networked to other machines can quickly spread the virus. Ransomware is on track to be a $1 billion cybercriminal business in 2016, the FBI has said.
It was found in 97 percent of phishing emails as of September 2016, according to a report from cybersecurity firm PhishMe.