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Netskope Next Gen SASE Branch converges Context-Aware SASE Fabric, Zero-Trust Hybrid Security, and SkopeAI-powered Cloud Orchestrator into a unified cloud offering, ushering in a fully modernized branch experience for the borderless enterprise.

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Press Release

Netskope Threat Research Reveals More Than Two-Thirds of Malware Downloads Came From Cloud Apps in 2021

Google Drive Takes Over Top Spot from Microsoft OneDrive for Malware Downloads; Malicious Office Docs Nearly Doubles

SANTA CLARA, Calif. – January 11, 2021 – Netskope, the SASE leader, today released the Netskope Cloud and Threat Spotlight: January 2022, which revealed new research highlighting the continued growth of malware and other malicious payloads delivered by cloud applications. The year-over-year analysis identifies the top trends in cloud attacker activities and cloud data risks from 2021 as compared to 2020, and examines changes in the malware landscape throughout 2021, highlighting that attackers are achieving more success delivering malware payloads to their victims and offering advice for improving security posture in 2022.

The research showed that more than two-thirds of malware downloads came from cloud apps in 2021 and identified Google Drive as the app with the most malware downloads, taking the spot from Microsoft OneDrive. The research also uncovered an increase in malicious Office documents from 19% to 37% of all malware downloads, all pointing to a rise in cloud application security risks. The report further shows that more than half of all managed cloud app instances are targeted by credential attacks.

The 2021 Netskope Cloud and Threat Spotlight is the latest in a series of regular research reports published by Netskope Threat Labs, which analyzes critical trends in enterprise cloud service and app use, web and cloud-enabled threats, and cloud data migrations and transfers. As the workforce becomes more distributed and stretches the limits of network and data security, organizations must apply modern security controls, such as Security Service Edge (SSE)-led architectures, to enable users the freedom to securely move about the cloud.

Key Findings

Based on anonymized data collected from the Netskope Security Cloud across millions of users worldwide from January 1, 2020 to November 30, 2021, key findings of the 2021 Cloud & Threat Spotlight include:

  • Cloud-delivered malware is now more prevalent than web-delivered malware. In 2021, malware downloads originating from cloud apps increased to 66% of all malware downloads when compared to traditional websites, up from 46% at the beginning of 2020.
  • Google Drive emerges as the top app for most malware downloads. Research found that Google Drive now accounts for the most malware downloads in 2021, taking over the top spot from Microsoft OneDrive. 
  • Cloud-delivered malware via Microsoft Office nearly doubled from 2020 to 2021. Malicious Microsoft Office documents increased to 37% of all malware downloads at the end of 2021 compared to 19% at the beginning of 2020, as attackers continue to use weaponized Office Documents to gain an initial foothold on target systems. The Emotet malspam campaign in Q2 2020 kicked off a spike in malicious Microsoft Office documents that copycat attackers have sustained over the past six quarters, with no signs of slowing down. 
  • More than half of managed cloud app instances are targeted by credential attacks.  Attackers constantly try common passwords and leaked credentials from other services to gain access to sensitive information stored in cloud apps. While the overall level of attacks remained consistent, the sources of the attacks shifted significantly, with 98% of attacks coming from new IP addresses. 
  • Corporate data exfiltration is on the rise. One out of seven employees takes data with them when they leave their employer, using personal app instances. Between 2020 and 2021, an average of 29% of departing employees downloaded more files from managed corporate app instances, and 15% of users uploaded more files to personal app instances in their final 30 days.

“The increasing popularity of cloud apps has given rise to three types of abuse described in this report: attackers trying to gain access to victim cloud apps, attackers abusing cloud apps to deliver malware, and insiders using cloud apps for data exfiltration,” said Ray Canzanese, Threat Research Director, Netskope Threat Labs. “The report serves as a reminder that the same apps that you use for legitimate purposes will be attacked and abused. Locking down cloud apps can help to prevent attackers from infiltrating them, while scanning for incoming threats and outgoing data can help block malware downloads and data exfiltration.”

The Netskope Cloud and Threat Spotlight is produced by Netskope Threat Labs, a team composed of the industry’s foremost cloud threat and malware researchers who discover and analyze the latest cloud threats affecting enterprises. 

Get the full Netskope Cloud and Threat Spotlight here

For additional information, the security community can access, engage with, and learn from Netskope’s threat researchers and the insight that the Netskope Security Cloud Platform affords into the evolving cloud threat landscape by visiting Netskope’s Threat Research Hub.

About Netskope

Netskope, the SASE leader, safely and quickly connects users directly to the internet, any application, and their infrastructure from any device, on or off the network. With CASB, SWG, Firewall-as-a-Service, and ZTNA built natively in a single platform, the Netskope Security Cloud provides the most granular context, via patented technology, to enable conditional access and user awareness while enforcing zero trust principles across data protection and threat prevention everywhere. Unlike others who force tradeoffs between security and networking, Netskope’s global security private cloud provides full compute capabilities at the edge.

Netskope is fast everywhere, data centric, and cloud smart, all while enabling good digital citizenship and providing a lower total-cost-of-ownership.