Microsoft Security Intelligence Report (2nd section)

Number: IRCRE201507199
Date: 2015-07-29
Volume 18 of the Microsoft Security Intelligence Report (SIRv18) provides in-depth perspectives on software vulnerabilities, software vulnerability exploits, malicious and potentially unwanted software, and security breaches. Microsoft developed these perspectives based on detailed trend analysis over the past several years, with a focus on third and fourth quarters of 2014.You can see the second section of the report in the following post.
Malware and Potentially Unwanted Software
The information in this section was compiled from telemetry data that was generated from more than 1 billion computers worldwide and some of the busiest services on the Internet.
Malware prevalence worldwide
The following table shows the locations with the most computers reporting malware detections in 2H14.
Encounter rates fell worldwide in 4Q14 as detections of Tugspay and CostMin decreased. France and Italy were hit particularly hard by Tugspay in 3Q14, with both locations seeing encounter rates above 8 percent for Tugspay alone that quarter. Consequently, both experienced large overall encounter rate declines in 4Q when Tugspay encounters decreased.
Threat categories
The following figure shows encounter rates for significant threat categorie in 2014.
Totals for each time period may exceed 100 percent because some computers report more than one category of threat in each time period.
Encounters with most categories of malware remained stable or decreased throughout the second half of 2014, in keeping with the general worldwide decline in malware encounters.
The encounter rate for the Downloaders & Droppers category of malware spiked in 3Q14 because of detections of Win32/Tugspay..
Encounters with malware families in the Trojans category declined by nearly half between 1Q14 and 4Q14 because of decreased detections of a number of formerly prevalent threats, including Win32/Wysotot, JS/Faceliker, and MSIL/Spacekito. Despite this decline, Trojans remained the most commonly detected category of malware throughout 2H14.
Threat families
The following figure lists the top 10 malware families that were detected on computers by Microsoft real-time antimalware products worldwide in 2H14, with other quarters included for comparison.
Malware encounter rates for domain-based and non-domain computers in 2H14, by category.
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