WEBINAR | From Deal to Defense: Unifying Cybersecurity Post-M&A
Reduce Alert Noise and False Positives
Boost your team's productivity by cutting down alert noise and false positives.
Automate Security Operations
Boost efficiency, reduce burnout, and better manage risk through automation.
Dark Web Monitoring
Online protection tuned to the need of your business.
Maximize Existing Security Investments
Improve efficiencies from existing investments in security tools.
Move your security operations beyond the limitations of MDR.
Secure with Microsoft 365 E5
Boost the power of Microsoft 365 E5 security.
Secure Multi-Cloud Environments
Improve cloud security and overcome complexity across multi-cloud environments.
Secure Mergers and Acquisitions
Control cyber risk for business acquisitions and dispersed business units.
Solve security operations challenges affecting critical operational technology (OT) infrastructure.
Force-Multiply Your Security Operations
Whether you’re just starting your security journey, need to up your game, or you’re not happy with an existing service, we can help you to achieve your security goals.
Detection Investigation Response
Modernize Detection, Investigation, Response with a Security Operations Platform.
Locate and eliminate lurking threats with ReliaQuest GreyMatter
Find cyber threats that have evaded your defenses.
Security metrics to manage and improve security operations.
Breach and Attack Simulation
GreyMatter Verify is ReliaQuest’s automated breach and attack simulation capability.
Digital Risk Protection
Continuous monitoring of open, deep, and dark web sources to identify threats.
GreyMatter Phishing Analyzer removes the abuse mailbox management by automating the DIR process for you.
The GreyMatter cloud-native Open XDR platform integrates with a fast-growing number of market-leading technologies.
Unify and Optimize Your Security Operations
ReliaQuest GreyMatter is a security operations platform built on an open XDR architecture and designed to help security teams increase visibility, reduce complexity, and manage risk across their security tools, including on-premises, clouds, networks, and endpoints.
Brands of the world trust ReliaQuest to achieve their security goals.
Learn how to achieve your security outcomes faster with ReliaQuest GreyMatter.
The latest security trends and perspectives to help inform your security operations.
Industry Guides and Reports
The latest security research and industry reports.
Catch up on the latest cybersecurity podcasts, and mindset moments from our very own mental performance coaches.
A deep dive on how ReliaQuest GreyMatter addresses security challenges.
The latest white papers focused on security operations strategy, technology & insight.
Current and future SOC trends presented by our security experts.
Events & Webinars
Explore all upcoming company events, in-person and on-demand webinars
From prevention techniques to emerging security trends, our comprehensive library can arm you with the tools you need to improve your security posture.
Get the latest threat analysis from the ReliaQuest Threat Research Team. ReliaQuest ShadowTalk Weekly podcast featuring discussions on the latest cybersecurity news and threat research.
ReliaQuest's ShadowTalk is a weekly podcast featuring discussions on the latest cybersecurity news and threat research. ShadowTalk's hosts come from threat intelligence, threat hunting, security research, and leadership backgrounds providing practical perspectives on the week's top cybersecurity stories.
February 29, 2024
We bring our best attitude, energy and effort to everything we do, every day, to make security possible.
Security is a team sport.
No Show Dogs Podcast
Mental Performance Coaches Derin McMains and Dr. Nicole Detling interview world-class performers across multiple industries.
Make It Possible
Make It Possible reflects our focus on bringing cybersecurity awareness to our communities and enabling the next generation of cybersecurity professionals.
Join our world-class team.
Press and Media Coverage
ReliaQuest newsroom covering the latest press release and media coverage.
Become a Channel Partner
When you partner with ReliaQuest, you help deliver world-class cybersecurity solutions.
How can we help you?
A Mindset Like No Other in the Industry
Many companies tout their cultures; at ReliaQuest, we share a mindset. We focus on four values every day to make security possible: being accountable, helpful, adaptable, and focused. These values drive development of our platform, relationships with our customers and partners, and further the ReliaQuest promise of security confidence across our customers and our own teams.
VoIP, or Voice over Internet Protocol, is the protocol via which voice communication and multimedia session are delivered via Internet Protocol sessions. This somewhat unexciting description underlines the overwhelming effect that VoIP has had on computing and telephony over the last decade. Moving towards a more interconnected, globalized economy, both business and home users have adopted unified communication devices that combine phone calls, messaging services, fax services, and web conferencing into one, all via the Internet. Notably, as early as 2008, 80% of all new Private Branch Exchange (a multi-line business telephone system) lines installed internationally were VoIP. Services such as Skype and Zoom are ubiquitous in the business world, and Discord and WhatsApp are prime examples of widespread adoption for personal communications.
So, VoIP is here to stay, but so are those who seek to target these services. Attackers can try to both intercept the various contents of a VoIP session and also use it as a stepping stone into the wider personal or corporate network. Examples of such threat actors include the ever-creative APT28 (aka Sofacy, Fancy Bear, etc.), who have been observed targeting VoIP technology (among other IoT devices) such as phones and printers as recently as April 2019, in a report published by Microsoft. In these cases, the VoIP applications were used as avenues into the broader network infrastructure, but VoIP can also be the primary target of an attack.
Commercial spyware, like Pegasus, has also demonstrated the capability of using VoIP as an initial attack vector, delivered to targets by exploiting a vulnerability in WhatsApp. Initiated merely by calling the phone number of the targeted individual over WhatsApp, successful infection allegedly did not require the user to answer the call. The spyware can also remove any trace of the infection event from the device’s communication logs, preventing users from even being aware that their communications were being intercepted.
The targeting of VoIP has also spread to deep and dark web cybercriminal forums and marketplaces. Common listings include “how-to” guides on hacking VoIP, as well as malware that explicitly targets VoIP applications. As a testament to the ubiquity of VoIP-related apps and their value as targets for cyber threat actors, one listing’s description reads:
“VoIP is simply overflowing with hack potential”
A listing for a VoIP hacking guide on a dark web marketplace. Source: Digital Shadows’ Shadow Search
What we see here is the same old story of the widening corporate and personal estate and the growing number of options that it presents to attackers. As with other less exotic types of computing technology, the rush to deployment has opened the window for multiple critical vulnerabilities related to VoIP (CVE-2019-12327, CVE-2019-12326, CVE-2019-3568, CVE-2018-18871, CVE-2018-17565, CVE-2018-17564, etc.).
Discussions of CVE-2019-3569, a WhatsApp vulnerability, across open and closed sources. Source: Digital Shadows’ Shadow Search
Another aspect of VoIP exploitation is how leaked exploit code that has previously been used by nation-state groups has influenced the broader development of targeting VoIP applications. The aforementioned Pegasus malware, for example, was initially developed by an Israel-based company for use by governments in counterterror or police operations. Continuing this trend, the FinSpy malware is a direct descendant of FinFisher, a piece of custom malware developed by Gamma International. FinFisher was famously leaked in 2014 and has now been detected in the wild targeting users in over 20 countries. FinSpy targets VoIP content as its primary objective rather than seeking to leverage VoIP application as a gateway into the wider network. Such applications are often generally touted as “secure” and “encrypted”, leading to their adoption for the transmission of sensitive communications, making them particularly attractive targets.
The commercial drivers behind VoIP technology almost guarantee the technology’s continued adoption within the business IT environment. Mitigating the threat is as much about managing the ever-expanding number of applications as it is dealing with specific VoIP-related vulnerabilities. Despite this, several VoIP-specific steps can be taken to mitigate the threat; these include:
Check out our weekly intelligence summaries to stay up to date with the latest threat actors, campaigns, and exploited vulnerabilities. Subscribe below!