Ransomware attacks up 11.4% worldwide: 6 things to know

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Ransomware attacks are up 11.4 percent from last year, a Kaspersky Lab report found.

For the report, Kaspersky Lab investigators analyzed depersonalized data gathered from users of Kaspersky Lab products. The report compares trends from April 2015 to March 2016 against trends from April 2016 to March 2017.

Here are six things to know.

1. Between April 2016 and March 2017, more than 2.5 million users encountered ransomware, an 11.4 percent increase from the previous year.

2. The U.S. experienced the highest proportion (18.65 percent) of mobile users attacked with ransomware in the April 2016 to March 2017 period — the year prior, the U.S. ranked fourth with 15.64 percent of mobile users experiencing a mobile ransomware attack.

3. The overall number of users attacked with mobile ransomware fell from 136,532 incidents in the 2015 to 2016 period to 130,232 incidents one year later, representing a 4.62 percent decline.

4. The major mobile ransomware actors included Fusob (65 percent of reported attacks), Svpeng (14 percent), Small (14 percent) and Egat (6 percent), based on data from the April 2016 to March 2017 period.

5. Encryption ransomware accounted for 44.6 percent of all ransomware attacks in the April 2016 to March 2017 period, a 13.6 percent rise from the year prior.

6. The dominant encryption ransomware actors between April 2016 and March 2017 included Locky (9.13 percent), CryptXXX (7.04 percent) and Zerber (3.62 percent).

Click here to read the full report.

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