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Netskope Threat Research: Next Generation of Phishing Attacks Uses Unexpected Delivery Methods to Steal Data
Report reveals new top sources of fake login page referrals, rise of fake third-party cloud apps used to trick users.
November 2, 2022
6 Min Read
SANTA CLARA, Calif., Nov. 2, 2022 /PRNewswire/ — Netskope, a leader in secure access service edge (SASE), today unveiled new research that shows how the prevalence of cloud applications is changing the way threat actors are using phishing attack delivery methods to steal data.
The Netskope Cloud and Threat Report: Phishing details trends in phishing delivery methods such as fake login pages and fake third-party cloud applications designed to mimic legitimate apps, the targets of phishing attacks, where the fraudulent content is hosted, and more.
Although email is still a primary mechanism for delivering phishing links to fake login pages to capture usernames, passwords, MFA codes and more, the report reveals that users are more frequently clicking phishing links arriving through other channels, including personal websites and blogs, social media, and search engine results. The report also details the rise in fake third-party cloud apps designed to trick users into authorizing access to their cloud data and resources.
Phishing Comes From All Directions
Traditionally considered the top phishing threat, 11% of the phishing alerts were referred from webmail services, such as Gmail, Microsoft Live, and Yahoo. Personal websites and blogs, particularly those hosted on free hosting services, were the most common referrers to phishing content, claiming the top spot at 26%. The report identified two primary phishing referral methods: the use of malicious links through spam on legitimate websites and blogs, and the use of websites and blogs created specifically to promote phishing content.
Search engine referrals to phishing pages have also become common, as attackers are weaponizing data voids by creating pages centered around uncommon search terms where they can readily establish themselves as one of the top results for those terms. Examples identified by Netskope Threat Labs include how to use specific features in popular software, quiz answers for online courses, user manuals for a variety of business and personal products, and more.
"Business employees have been trained to spot phishing messages in email and text messages, so threat actors have adjusted their methods and are luring users into clicking on phishing links in other, less expected places," said Ray Canzanese, Threat Research Director, Netskope Threat Labs. "While we might not be thinking about the possibility of a phishing attack while surfing the internet or favorite search engine, we all must use the same level of vigilance and skepticism as we do with inbound email, and never enter credentials or sensitive information into any page after clicking a link. Always browse directly to login pages."
The Rise of Fake Third-Party Cloud Apps
Netskope's report discloses another key phishing method: tricking users into granting access to their cloud data and resources through fake third-party cloud applications. This early trend is particularly concerning because access to third-party applications is ubiquitous and poses a large attack surface. On average, end-users in organizations granted more than 440 third-party applications access to their Google data and applications, with one organization having as many as 12,300 different plugins accessing data – an average of 16 plugins per user. Equally as alarming, over 44% of all third-party applications accessing Google Drive have access to either sensitive data or all data on a user's Google Drive—further incentivizing criminals to create fake third-party cloud apps.
"The next generation of phishing attacks is upon us. With the prevalence of cloud applications and the changing nature of how they are used, from Chrome extensions or app add-ons, users are being asked to authorize access in what has become an overlooked attack vector," added Canzanese. "This new trend of fake third-party apps is something we're closely monitoring and tracking for our customers. We expect these types of attacks to increase over time, so organizations need to ensure that new attack paths such as OAuth authorizations are restricted or locked down. Employees should also be aware of these attacks and scrutinize authorization requests the same way they scrutinize emails and text messages."
Within the report, Netskope Threat Labs includes actionable steps organizations can take to identify and control access to phishing sites or applications, such as deploying a security service edge (SSE) cloud platform with a secure web gateway (SWG), enabling zero trust principles for least privilege access to data and continuous monitoring, and using Remote Browser Isolation (RBI) to reduce browsing risk for newly-registered domains.
Additional key findings from the report include:
Employees continue to click, fall victim to malicious links. It is widely understood that it takes just one click to severely compromise an organization. While enterprise phishing awareness and training continues to be more prevalent, the report reveals that an average of eight out of every 1,000 end-users in the enterprise clicked on a phishing link or otherwise attempted to access phishing content.
Users are being lured by fake websites designed to mimic legitimate login pages. Attackers primarily host these websites on content servers (22%) followed by newly registered domains (17%). Once users put personal information into a fake site, or grant it access to their data, attackers are able to capture usernames, passwords, and multi-factor authentication (MFA) codes.
Geographic location plays a role in the access rate of phishing. Africa and the Middle East were the two regions with the highest percentages of users accessing phishing content. In Africa, the percentage of users accessing phishing content is more than 33% above average, and in the Middle East, it is more than twice the average. Attackers frequently use fear, uncertainty, and doubt (FUD) to design phishing lures and also try to capitalize on major news items. Especially in the Middle East, attackers appear to be having success designing lures that capitalize on political, social, and economic issues affecting the region.
Netskope provides threat and data protection to millions of users worldwide. Information presented in this report is based on anonymized usage data collected by the Netskope Security Cloud platform relating to a subset of Netskope customers with prior authorization. Statistics in this report are based on the three-month period from July 1, 2022 through September 30, 2022.
Get the full Netskope Cloud and Threat Report: Phishing here.
Learn more about Netskope Threat Labs and gain insight from the Netskope Security Cloud Platform by visiting Netskope's Threat Research Hub.
Netskope, a global SASE leader, is redefining cloud, data, and network security to help organizations apply zero trust principles to protect data. Fast and easy to use, the Netskope platform provides optimized access and real-time security for people, devices, and data anywhere they go. Netskope helps customers reduce risk, accelerate performance, and get unrivaled visibility into any cloud, web, and private application activity. Thousands of customers, including more than 25 of the Fortune 100, trust Netskope and its powerful NewEdge network to address evolving threats, new risks, technology shifts, organizational and network changes, and new regulatory requirements. Learn how Netskope helps customers be ready for anything on their SASE journey, visit netskope.com.
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