Many organizations fail to keep track of what individuals have access to while employed. As a result, they’re at greater risk of failing to spot malicious activity by insiders or former insiders. It’s not always easy to tell when someone has either loaned out or lost control of their access credentials. Companies should be able to correlate when an employee’s account is being used to log in, even if they’re on vacation or using a device on vacation, experts say. An engineer pleaded guilty in federal court to snooping on his former employer for two years.”]
Source: https://www.govinfosecurity.com/clean-break-block-ex-employees-access-a-9856