Russian hackers used the most conventional phishing tools while targeting hundreds of U.S. utilities in 2017. These scamming tools tricked hundreds of staffers into revealing passwords with massive levels of access. In the past, Russian has primarily targeted the energy sector but has also messed with the nuclear, aviation, and critical manufacturing sectors. Among the victims were big organizations with advanced security networks as well as small companies who found it difficult to allocate budgets for cybersecurity. The Russian hackers had targeted vendors mostly because they had direct access to the utilities.”]
Source: https://hackercombat.com/what-happens-when-russia-uses-a-basic-phishing-scam-on-the-u-s/