Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Vulnerabilities / Threats

FBI Warns of Dangers in 'Safe' Websites

Criminals are using TLS certificates to convince users that fraudulent sites are worthy of their trust.

One of the most common mechanisms used to secure web browser sessions — and to assure consumers that their transactions are secure — is also being used by criminals looking to gain victims' trust in phishing campaigns. The FBI has issued a public service announcement defining the problem and urging individuals to go beyond simply trusting any "https" URL. 

Browser publishers and website owners have waged successful campaigns to convince consumers to look for lock icons and the "https:" prefix as indicators that a website is encrypted and, therefore, secure. The problem, according to the FBI and security experts, is that many individuals incorrectly assume that an encrypted site is secure from every sort of security issue.

Craig Young, computer security researcher for Tripwire’s VERT (vulnerability and exposure research team) recognizes the conflict between wanting consumers to feel secure and guarding against dangerous over-confidence. "Over the years, there has been a battle of words around how to communicate online security. Website security can be discussed at a number of levels with greatly different implications," he says.

"On its own, however, the padlock does not actually confirm that the user is actually connected with a server from the business they expect," Young explains. "Unfortunately, there is still no solid solution for empowering the general public to discern phishing or scam sites with 100% effectiveness."

In the FBI's PSA, the bureau points out that criminals are increasingly incorporating website certificates in phishing email messages impersonating known companies and individuals. The trustworthy-looking URLs take the victims to pages that seek sensitive and personal information.

"This isn’t new; cyber criminals have been orchestrating these kinds of phishing campaigns for several years," says Kevin Bocek, vice president of security strategy and threat intelligence at Venafi. He explains, "In 2017, security researchers uncovered over 15,000 certificates containing the word 'PayPal' that were being used in attacks. Since then it’s become clear that bad actors have an entire supply chain in place on the dark web to get trustworthy TLS certificates to use in all kinds of malicious attacks."

Bocek says that researchers have found definitive evidence of TLS certificates for sale on the dark web, with prices for highly trustworthy certificates reaching more than a thousand dollars. He sees greater visibility and transparency as key assets in fighting the proliferation of these "trustworthy" certificates used in fraudulent ways.

Other technologies may eventually provide additional weapons against the criminals. Young says, "In the long run, the best available solution to this problem is probably the use of newer standards like WebAuthN to prevent naïve users from inadvertently divulging site credentials to a phisher."

The FBI's PSA doesn't recommend new technology, instead suggesting behavioral defenses against the phishing attacks. The Bureau recommends questioning the intent of email messages, confirming the authenticity of messages before divulging sensitive information, looking for mis-spellings or domain inconsistencies, and tempering the overall trust in a site simply because it displays a green lock icon.

Related content:

Curtis Franklin Jr. is Senior Editor at Dark Reading. In this role he focuses on product and technology coverage for the publication. In addition he works on audio and video programming for Dark Reading and contributes to activities at Interop ITX, Black Hat, INsecurity, and ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
REISEN1955
50%
50%
REISEN1955,
User Rank: Ninja
6/11/2019 | 1:54:54 PM
A good policy
This works: If you don't need it, don't read it, delete it.  Simple and easy to remember
Where Businesses Waste Endpoint Security Budgets
Kelly Sheridan, Staff Editor, Dark Reading,  7/15/2019
How Attackers Infiltrate the Supply Chain & What to Do About It
Shay Nahari, Head of Red-Team Services at CyberArk,  7/16/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
Building and Managing an IT Security Operations Program
As cyber threats grow, many organizations are building security operations centers (SOCs) to improve their defenses. In this Tech Digest you will learn tips on how to get the most out of a SOC in your organization - and what to do if you can't afford to build one.
Flash Poll
The State of IT Operations and Cybersecurity Operations
The State of IT Operations and Cybersecurity Operations
Your enterprise's cyber risk may depend upon the relationship between the IT team and the security team. Heres some insight on what's working and what isn't in the data center.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-7843
PUBLISHED: 2019-07-18
Adobe Campaign Classic version 18.10.5-8984 and earlier versions have an Insufficient input validation vulnerability. Successful exploitation could lead to Information Disclosure in the context of the current user.
CVE-2019-7846
PUBLISHED: 2019-07-18
Adobe Campaign Classic version 18.10.5-8984 and earlier versions have an Improper error handling vulnerability. Successful exploitation could lead to Information Disclosure in the context of the current user.
CVE-2019-7847
PUBLISHED: 2019-07-18
Adobe Campaign Classic version 18.10.5-8984 and earlier versions have an Improper Restriction of XML External Entity Reference ('XXE') vulnerability. Successful exploitation could lead to Arbitrary read access to the file system in the context of the current user.
CVE-2019-7848
PUBLISHED: 2019-07-18
Adobe Campaign Classic version 18.10.5-8984 and earlier versions have an Inadequate access control vulnerability. Successful exploitation could lead to Information Disclosure in the context of the current user.
CVE-2019-7850
PUBLISHED: 2019-07-18
Adobe Campaign Classic version 18.10.5-8984 and earlier versions have a Command injection vulnerability. Successful exploitation could lead to Arbitrary Code Execution in the context of the current user.