Securing video conferencing comes down to five things working together: strong authentication, correct use of encryption, tight meeting configuration, disciplined patching and clear data governance for recordings. No single control covers the gap left by the others. The vendor you choose sets the ceiling on what is possible, but your configuration and day to day operations decide whether that ceiling is actually reached.
TL;DR:
- Ensuring conference security requires strict meeting configuration, including default restrictions on sharing, recording, and remote control to prevent uninvited access.
- Regular patching of clients, room hardware, and plugins, along with centralized device management and vulnerability monitoring, minimizes exploitation risks from known flaws.
- Implementing strong identity controls such as enforced multi-factor authentication, single sign-on, and verified admin privileges significantly reduces credential-related breaches.
- Conducting audits of admin accounts, meeting access logs, and vendor security evidence helps detect dormant accounts and ensures compliance with security policies.
- Choosing platforms with resilient infrastructure, integrated identity management, and clear data governance improves security posture and simplifies operational control.
Table of Contents
- The threat landscape and notable incidents affecting conferencing security
- Core technical controls: encryption, authentication and access
- Secure meeting configuration and feature governance
- Patching, device and room kit hardening, and vulnerability monitoring
- Operational controls: policies, training and incident readiness
- Assessing and selecting a conferencing service: a security checklist
- How a telco-grade, locally supported platform maps to these controls
- Author perspective: priorities for 2026
- Putting these controls into practice with NextVoice
- Sources
- FAQ
The threat landscape and notable incidents affecting conferencing security
Video conferencing carries the same weight as email or file storage in most organisations, yet it is often configured with consumer defaults rather than enterprise controls. That gap is where attackers operate.
The main attack vectors seen against conferencing platforms include:
- Credential compromise: stolen or reused passwords let attackers join as a legitimate participant or take over an organiser’s account.
- Eavesdropping: unencrypted or weakly protected streams can be intercepted on shared or compromised networks.
- Uninvited entry: guessed or leaked meeting links let outsiders join calls that lack passcodes or waiting rooms.
- Malicious or unpatched clients: attackers exploit known flaws in desktop apps, browser plugins or room hardware that has not been updated.
- Supply chain and update risks: software delivered through untrusted channels can carry tampered code.
Two recent vulnerability disclosures illustrate why patching discipline matters. NVD’s entry for CVE-2025-49458 documents a buffer overflow in some conferencing clients that could allow denial of service if the client is not patched. Separately, NVD’s record of CVE-2026-56345 describes an authorisation bypass in AVideo’s Meet plugin that let attackers hijack sessions through crafted uploads, a reminder that third-party plugins and upload endpoints widen the attack surface beyond the core client.
Neither flaw is exotic. Both are the kind of defect that regular CVE monitoring and a functioning patch process catch before they become incidents. Treating conferencing software with the same rigour as an email server or a VPN gateway, rather than as a convenience app, closes most of the gap attackers rely on.
Core technical controls: encryption, authentication and access
Encryption and identity controls do different jobs, and conflating them is a common mistake. Transport encryption (TLS) protects data between each participant and the vendor’s servers. End to end encryption (E2EE) protects content so that even the vendor cannot read it, but it usually disables server side features such as cloud recording, live transcription or dial in bridging. NCSC’s secure communications principles frame the real question as whether data is protected against eavesdropping and whether participants can be authenticated, not simply whether a padlock icon appears. For most business meetings, correctly configured TLS with strong identity controls is the practical baseline; reserve E2EE for genuinely sensitive discussions where losing recording or transcription is an acceptable trade.
Identity and access controls do more to reduce risk than encryption choice alone:
- Federate identity through SAML or OIDC single sign-on so conferencing inherits your existing directory rather than running a separate credential store.
- Enforce multi-factor authentication on every account, with passkeys enabled where the platform supports them.
- Require authenticated entry for internal or sensitive meetings, blocking anonymous or dial in only participants by default.
- Use waiting rooms and passcodes for any meeting with external guests.
- Separate admin roles so that recording management, log access and user provisioning sit with different least privilege roles rather than one super admin.
NCSC’s guidance on assessing conferencing services notes that organisations often gain a real security benefit simply by using a service already integrated with their identity provider, because it inherits existing authentication, audit and monitoring controls rather than duplicating them, as set out in its video conferencing security guidance. The same guidance recommends least privilege for admin accounts and checking independent audit evidence before granting broad administrative access.
Pro Tip: Audit who holds organiser or admin rights every quarter. Dormant admin accounts are one of the easiest ways for a compromised credential to escalate into a data exposure.
Secure meeting configuration and feature governance
Most conferencing incidents trace back to a feature left on its default setting rather than a flaw in the platform itself. Screen sharing, file transfer, remote control and chat should all default to restricted, with organisers opting in per meeting rather than administrators opting out.
Governance for recordings and AI features needs the same discipline:
- Default screen sharing to host-only and require the organiser to grant it explicitly to others.
- Disable remote control and file transfer by default, enabling them only for meetings that genuinely need them.
- Prompt for consent before recording starts, and store recordings centrally rather than on individual laptops.
- Apply a retention policy to recordings and transcripts, with access logged and reviewed, not left indefinitely accessible.
- Treat AI note takers and transcription bots as data processors, checking what they capture and offering an opt-out.
NCSC’s practical guidance on securing online meetings recommends restricting screen sharing and recording by default and managing where recordings and transcripts end up, alongside the more familiar advice on strong passcodes and two-step verification. The same guidance flags AI attendees specifically, urging organisations to understand what an AI feature records, transcribes or analyses, and to give participants a genuine opt-out where possible.
An organiser checklist for sensitive meetings should cover: confirm the invite list, enable a waiting room, verify recording settings, and remind attendees that the session may be recorded before it starts.
Patching, device and room kit hardening, and vulnerability monitoring
Meeting room hardware deserves the same treatment as any other managed endpoint, not the informal patching that boardroom screens often get. NCSC’s guidance on assessing conferencing services specifically warns that room kits often run vendor-specific update chains and cannot be patched the same way as a desktop client.
A workable operational pattern looks like this:
- Enrol room devices and conferencing clients in MDM so patch status is visible centrally, not left to individual offices.
- Allow updates only from vendor-trusted channels, disabling side-loading or third-party plugin installation on room systems.
- Monitor CVE and NVD feeds for the specific products in use, rather than relying on general security news.
- Run a simple response flow: triage the advisory for relevance, stage the patch, test it against a small device group, deploy broadly, then communicate the change to affected teams.
Subscribing directly to vendor security bulletins and to the NVD database catches issues like CVE-2025-49458 and CVE-2026-56345 well before they show up in general reporting.
Operational controls: policies, training and incident readiness
Technical controls only hold up if policy and training close the human gaps around them. A workable policy set includes:
- Classify meeting sensitivity so that finance, legal or board discussions automatically trigger stricter defaults than a routine team standup.
- Standardise on an approved tool and default template, rather than letting each team configure its own meeting links.
- Apply change control to security-relevant settings, so a change to default recording or sharing behaviour needs sign-off.
- Train staff on invite hygiene, verifying unfamiliar participants, and basic camera and microphone privacy checks before joining.
- Review meeting logs and admin actions on a set cadence, keeping records forensically usable if an incident needs investigating later.
Tabletop exercises that include a conferencing scenario, such as an uninvited participant joining a sensitive call or a compromised organiser account, expose gaps in incident response plans that pure technical review misses. For guidance on running meetings that stay both efficient and defensible, resources like Grandspeed’s guide to video call productivity cover practical habits for managing recordings and meeting hygiene alongside the security basics.
Assessing and selecting a conferencing service: a security checklist
Choosing or renewing a conferencing platform deserves a dedicated risk assessment rather than a features comparison, a point CISA and NCSC both make in their guidance on evaluating cloud services against established security principles.
Before signing or renewing, work through this list:
- Request independent audit evidence, such as SOC 2 or ISO 27001 reports, rather than accepting a vendor’s own security page as proof.
- Ask how encryption keys are managed and whether the vendor or the customer holds control over them.
- Confirm SSO and MFA support and whether the platform can enforce, not just permit, multi-factor authentication.
- Check what admin logging is available and how long logs are retained.
- Clarify breach notification commitments and data retention practices in the contract, not just in a general privacy policy.
NCSC’s guidance for assessing conferencing services recommends checking answers against its own cloud security principles for higher-risk use cases, and weighting vendors that integrate cleanly with your existing identity provider and monitoring stack over those that require a separate security model.
How a telco-grade, locally supported platform maps to these controls
A platform built on a resilient, multi-availability-zone cloud architecture reduces one whole category of risk before configuration even starts, because availability and failover are handled at the infrastructure layer rather than left to a single data centre. Locally based support shortens the time between spotting a misconfigured setting, such as an open waiting room or an unrestricted recording policy, and getting it fixed.
Centralised administration also matters more than it looks. When user provisioning, call recording and communication settings sit in one managed console rather than scattered across departmental accounts, the least privilege and audit practices described earlier become far easier to enforce consistently, rather than depending on every team getting it right on its own.
Author perspective: priorities for 2026
If you can only sequence a handful of changes this year, start with identity: SSO, enforced MFA and authenticated only meetings close more risk than any encryption debate. Recording governance comes next, because unmanaged recordings quietly become your biggest data liability. Device hardening and CVE monitoring follow.
None of this holds without the people and process side. A well configured platform run by staff who ignore waiting room prompts or forward meeting links freely will still leak.
— Stuart
Putting these controls into practice with NextVoice
A platform built on a resilient, telco-grade AWS cloud architecture across multiple availability zones supports the availability and data handling controls this guide covers without the cost of on-premise hardware. Centralised administration allows management of users, call flows and recording settings consistently, rather than leaving configuration to individual offices, and local support can help fix misconfigurations promptly.
For organisations unsure whether their current setup meets these standards:
- A technical audit reviews existing configuration against the controls described above.
- The NextVoice platform brings voice and video calling, call recording and administration into one managed system.
Book a technical audit to see where your current conferencing setup stands.
FAQ
How can you secure video conferencing?
Secure video conferencing by combining enforced multi-factor authentication, restricted meeting entry through waiting rooms and passcodes, host-only screen sharing by default, and centrally governed recording and retention policies. NCSC’s guidance on securing online meetings sets out these steps alongside prompt patching of clients and room devices.
How can I make my meetings more secure?
Turn on two-step verification for every account, require a waiting room or passcode for anyone joining from outside your organisation, and set screen sharing and recording to host-only rather than open by default. Review who has organiser or admin rights regularly, since dormant accounts with broad permissions are a common weak point.
Can video calls be stolen or hacked?
Yes: attackers can intercept poorly protected streams, guess or reuse leaked meeting links, or exploit unpatched vulnerabilities in conferencing clients and plugins, as shown by advisories like CVE-2025-49458 and CVE-2026-56345. Strong authentication, restricted meeting entry and prompt patching close most of these paths.
What are the disadvantages of video conferencing?
Video conferencing can expose organisations to uninvited entry when meetings lack passcodes or waiting rooms, to data exposure when recordings and transcripts are stored without retention controls, and to disruption from unpatched vulnerabilities in clients or room hardware. These risks are manageable with the authentication, configuration and patching practices covered above, but they do not disappear on their own.
What is the difference between TLS and end to end encryption in video calls?
TLS protects data as it travels between each participant and the vendor’s servers, while end to end encryption protects the content so the vendor itself cannot access it. End to end encryption often disables features like cloud recording or live transcription, which is why NCSC’s secure communications principles frame the real question as whether eavesdropping and impersonation are prevented, not which encryption label a vendor uses.