TL;DR
Vulnerability exploitation overtook stolen credentials as the top breach entry point for the first time in 19 years, now 31% of breaches, according to the 2026 Verizon DBIR.
enhanced.io is a channel-only Open XDR SOCaaS built exclusively for MSPs, with 400+ integrations across endpoint, network, cloud, identity and IoT/OT.
Ransomware deploys within 7 days of initial access in 54% of incidents, and 96% of attacks now target backup locations before encrypting production data.
AI-generated voice, video, or text now drives 40% of BEC attacks, up from under 5% in 2023.
48% of breaches involve a third party, and 43% of MSPs and their customers had a supplier-originated incident in the past year, according to CyberSmart's 2026 MSP Survey.
The threat landscape heading into 2027 looks nothing like it did three years ago. Attackers have access to AI tooling that automates reconnaissance, generates convincing phishing lures, and accelerates exploit development at a pace that outstrips most organizations' patching cycles. Meanwhile, the attack surface keeps expanding: more cloud workloads, more connected devices, more third-party integrations, and now AI agents embedded inside business workflows.
The 2026 Verizon Data Breach Investigations Report, built on more than 22,000 confirmed breaches across 145 countries, captured a shift that reframes almost everything else. Vulnerability exploitation overtook stolen credentials as the leading way attackers get in, accounting for roughly 31% of breaches. That single data point tells you where 2027 is heading.
Ransomware volume is projected to be up around 40% by the end of 2026 against a 2024 baseline. Business email compromise attacks using AI-generated voice, video, or text have climbed to roughly 40% of all BEC incidents, up from under 5% in 2023.
I built enhanced.io because most of what closes these gaps is visibility across surfaces traditional MDR never reaches, and a SOC that responds around the clock rather than during business hours. enhanced.io is a channel-only Open XDR SOCaaS built exclusively for MSPs, with 400+ integrations across endpoint, network, cloud, identity and IoT/OT. This list draws on the NCSC's Impact of AI on Cyber Threat to 2027 report, Gartner's 2026 cybersecurity forecast, the Verizon DBIR, and research from Berkeley's Center for Long-Term Cybersecurity. The five threats below are ranked by the combination of likelihood and potential business impact, not novelty alone.
AI-powered vulnerability exploitation
Vulnerability exploitation is now the single most common breach entry point, and AI is about to make it significantly worse. The NCSC's 2027 threat assessment concludes that AI-enabled tools will "almost certainly enhance threat actors' capability to exploit known vulnerabilities, increasing the volume of attacks against systems that have not been updated with security fixes."
The mechanism here is not theoretical. Attackers are already using AI to compress the time between vulnerability disclosure and active exploitation. That window, which used to be measured in weeks or months, has shrunk to days. AI accelerates the process further by automating vulnerability scanning, generating working proof-of-concept exploit code, and prioritizing targets based on exposure and likely value.
Why this is ranked first
The data supports the ranking. According to the Verizon DBIR, vulnerability exploitation now accounts for roughly 31% of all breaches, surpassing stolen credentials for the first time in the report's 19-year history. The patch gap is widening, not narrowing, and nothing in current remediation trends suggests that reverses before 2027.
The highest-risk targets are internet-facing devices: firewalls, VPNs, routers, and remote access appliances. These are exactly the devices that are often under-patched, rarely monitored at the process level, and sit at the perimeter of every network they protect.
What to do now
Patch on a deadline, not an intention. Assign a named owner and a hard date to every critical CVE. Internet-facing appliances are not optional.
Prioritize CISA's Known Exploited Vulnerabilities catalog. It tracks vulnerabilities actively being exploited in the wild. If something is on that list and unpatched in your environment, it is a live risk.
Deploy detection that covers non-agent surfaces. Firewalls and network appliances do not support endpoint agents. Visibility into east-west traffic and OT/IoT devices is the only way to catch exploitation attempts that bypass perimeter controls.
2. AI-driven social engineering and deepfake fraud
Business email compromise has always been the highest-ROI attack for criminals willing to invest in social engineering. AI has removed most of the investment. Berkeley's Center for Long-Term Cybersecurity describes the 2027 trajectory bluntly: what once required a skilled team, days of reconnaissance, and significant financial outlay is now executed by a single attacker using commercially available AI tools.
The result is attacks that are more frequent, faster, more personalized, and nearly impossible to distinguish from legitimate communication.
The deepfake problem is already here
The share of BEC attacks using AI-generated voice, video, or text reached roughly 40% in 2026, up from under 5% in 2023. That trajectory points to AI-assisted social engineering becoming the majority of BEC attempts before 2027 ends. Deepfake audio and video are no longer expensive production projects. They are available as a service, at scale, for a few hundred dollars.
The core attack pattern: an executive receives a video call from what appears to be their CFO or CEO, instructing them to authorize a wire transfer. The face is real. The voice is real. The instruction is fraudulent.
What to do now
Institute a callback rule for money movement. This is free and it works. Any financial authorization request received via email, message, or call must be verified through a separate, pre-established channel before funds move. Make it apply to the most senior people in the organization; they are the most impersonated targets.
Retrain staff for the AI era. The old advice, look for typos and odd phrasing, is obsolete. AI-generated phishing is grammatically perfect and contextually aware. Train employees to verify the authority behind a request, not only its appearance.
Use DMARC, DKIM, and SPF. Email authentication does not stop deepfake video calls, but it eliminates a significant portion of the impersonation surface by preventing spoofed sending domains. NIST's email authentication guidance covers implementation standards.
3. Next-generation ransomware
Ransomware is not a new threat. It is, however, a rapidly evolving one. The version arriving in 2027 is faster, more targeted, and designed specifically to defeat the recovery strategies organizations built in response to earlier waves.
U.S. ransomware incidents rose roughly 50% over the first ten months of 2025. Industry projections put attacks up around 40% by the end of 2026 against a 2024 baseline. Volume alone would be enough to rank this threat. The tactical evolution makes it more dangerous still.
How modern ransomware has changed
The two most important shifts in ransomware behavior are speed and backup targeting.
Speed: in roughly 54% of ransomware incidents, the malware is deployed within seven days of initial access. The old assumption of a long dwell time, months during which defenders were able to detect and eject an intruder, no longer applies. By the time many organizations notice unusual behavior, encryption is already underway.
Backup targeting: roughly 96% of ransomware attacks now attempt to reach backup locations before encrypting production data. Attackers figured out that encrypting live systems is only leverage if the victim cannot restore. An untested, reachable backup is not a recovery plan. It is a false sense of security.
| Ransomware Metric | Figure |
|---|---|
| Incidents up vs. 2024 baseline (projected 2026) | ~40% |
| Attacks deploying within 7 days of access | ~54% |
| Attacks targeting backup locations | ~96% |
| U.S. incident growth (first 10 months of 2025) | ~50% |
What to do now
Make backups immutable, isolated, and test-restored. The test date matters as much as the backup itself. An untested backup is an assumption, not a guarantee. Document the last successful restore.
Get detection that runs outside business hours. A seven-day deployment window means a Friday intrusion becomes a Monday encryption event. 24/7 monitoring is not a premium feature for 2027. It is the baseline requirement.
Segment networks. Ransomware spreads laterally. Flat networks give attackers a straight path from initial access to every connected system, including backups.
4. Supply chain and third-party compromise
Supply chain attacks are not new either, but their scale and frequency have reached a point where third-party risk deserves its own entry on any serious 2027 threat list. Roughly 48% of breaches now involve a third party, according to the Verizon DBIR. CyberSmart's 2026 MSP Survey found that 43% of MSPs and their customers experienced an incident that originated with a supplier or vendor in the preceding twelve months.
The math here is straightforward and uncomfortable: if nearly half of breaches trace back to a third party, an organization's security posture is only as strong as the weakest link in its vendor ecosystem.
Why MSPs are a specific target
Managed service providers represent a particularly attractive target for supply chain attackers, because compromising one MSP provides access to dozens or hundreds of downstream client environments simultaneously. Attackers use legitimate remote management tools, compromised credentials, and software update mechanisms to move from the MSP's infrastructure into client networks without triggering obvious alerts.
The compounding risk: many SMB clients rely entirely on their MSP for security oversight. If the MSP is the attack vector, there is no independent layer of detection watching for the intrusion.
What to do now
Audit vendor access. Know which third parties reach your systems, what level of access they have, and how that access is logged. Vendors with standing administrative access and no audit trail are an unacceptable risk.
Apply least-privilege principles to integrations. Every third-party tool or platform that connects to client environments should have the minimum permissions required to function, nothing more.
Review your software supply chain. The CISA software supply chain security guidance provides a practical framework for evaluating the integrity of software and update pipelines used in managed environments.
Treat MSP-to-client access as a high-value attack path. Segment it, monitor it, and require MFA for every privileged action, even internal ones.
5. Agentic AI as an attack surface
The first four threats on this list involve attackers using AI as a weapon. This one is different: it involves the AI systems organizations are deploying themselves becoming the target.
Agentic AI, meaning AI systems that plan and execute multi-step tasks autonomously, with access to email, files, calendars, databases, and business applications, is being rolled out across organizations at speed. Gartner's 2026 cybersecurity forecast identifies agentic threats as one of the most disruptive factors to cybersecurity strategy in the coming period. The NCSC agrees, noting that "the growing incorporation of AI models and systems across the UK's technology base, and particularly within critical national infrastructure, almost certainly presents an increased attack surface for adversaries to exploit."
The new attack vectors
An AI agent with broad permissions and no oversight is a new kind of insider risk. The specific attack techniques targeting these systems are still maturing, but three are already documented:
| Attack Type | How It Works |
|---|---|
| Prompt injection | Malicious instructions embedded in documents, emails, or web content that redirect the agent's actions |
| Tool misuse | Exploiting the agent's legitimate access to systems to exfiltrate data or execute unauthorized actions |
| Memory poisoning | Corrupting the agent's persistent memory or context to alter its future behavior |
Why this threat ranks in the top 5
Most organizations deploying AI agents are doing so faster than they are building governance frameworks around them. An agent with access to email and file storage that gets redirected by a malicious prompt in a document it processes is not a hypothetical risk. It is a gap that exists right now in organizations that have deployed these tools without security review.
What to do now
Inventory AI agents and their permissions. Treat every deployed AI agent as you would a privileged user account. Know what it accesses, log what it does, and apply least-privilege principles.
Implement human-in-the-loop controls for high-risk actions. Any agent action that involves moving money, sending external communications, or modifying access permissions should require human approval.
Test for prompt injection. Include adversarial prompt testing in security assessments for any system where AI agents process external input, including emails, documents, and web content.
The common thread: speed and visibility
Look across all five threats and a single pattern emerges. In every case, the defender's window to detect and respond is shrinking. Vulnerabilities are exploited within days. Ransomware deploys within a week of access. AI-generated phishing arrives in volumes no human review process is able to screen. Supply chain intrusions move through trusted channels that bypass standard perimeter controls. Agentic AI attacks may execute and complete before anyone realizes the agent was manipulated.
The practical implication is that reactive security, the kind that investigates alerts after the fact during business hours, is no longer sufficient. The organizations that weather 2027 well will be the ones with continuous visibility across their entire environment, including the surfaces traditional endpoint agents cannot reach, and detection capabilities that operate around the clock.
The five threats above are not independent problems requiring five separate solutions. They share a common vulnerability: gaps in visibility and detection speed. Closing those gaps, through 24/7 monitoring, broad coverage of non-agent surfaces, and clear incident response processes, addresses the underlying weakness that makes all five threats dangerous.
The good news is that none of these threats require exotic countermeasures. Immutable backups, deadline-driven patching, callback rules for wire transfers, vendor access audits, and AI agent governance are all achievable with current technology. The gap between organizations that implement them and those that do not will define the breach statistics of 2027.
If you want to see how enhanced.io covers the visibility gaps behind these five threats for your specific client base, book time with Hannah.
About enhanced.io
enhanced.io is a channel-only Open XDR SOCaaS built exclusively for MSPs, with 400+ integrations across endpoint, network, cloud, identity and IoT/OT. Every partner gets a named, CISSP-certified Fractional Security Director who works openly alongside your team, backed by a 24x7 SOC. enhanced.io never sells direct to end clients. Book a partnership conversation with Hannah Lloyd.
What are the top cybersecurity threats for 2027?
Ranked by likelihood and impact: AI-powered vulnerability exploitation, AI-driven social engineering and deepfake fraud, next-generation ransomware, supply chain and third-party compromise, and agentic AI as an attack surface. All five share a common thread: the defender's window to detect and respond is shrinking.
Why has vulnerability exploitation overtaken stolen credentials as the top breach vector?
The 2026 Verizon DBIR found vulnerability exploitation accounts for roughly 31% of breaches, the first time it has surpassed credential theft in the report's 19-year history. AI is compressing the time between vulnerability disclosure and active exploitation from weeks or months down to days, and internet-facing devices like firewalls and VPNs are the most common entry point.
How common are AI deepfakes in business email compromise now?
AI-generated voice, video, or text now appears in roughly 40% of BEC attacks, up from under 5% in 2023. Deepfake audio and video are available as a commercial service for a few hundred dollars, which has removed most of the cost and skill barrier that once limited these attacks to well-resourced criminal groups.
How has ransomware changed heading into 2027?
Two shifts matter most: speed and backup targeting. Roughly 54% of ransomware incidents now deploy within 7 days of initial access, down from a dwell time once measured in months, and about 96% of attacks attempt to reach backup locations before encrypting production data, which makes untested backups far less useful as a recovery plan.
Why are MSPs a specific target for supply chain attacks?
Compromising one MSP provides access to dozens or hundreds of downstream client environments at once. CyberSmart's 2026 MSP Survey found 43% of MSPs and their customers experienced a supplier-originated incident in the past year, and many SMB clients rely entirely on their MSP for security oversight, so there is no independent layer watching for the intrusion if the MSP itself is the entry point.
What is agentic AI as a cybersecurity threat?
It refers to AI agents that plan and execute multi-step tasks autonomously with access to email, files, and business applications becoming the target rather than the weapon. The three documented attack types are prompt injection, tool misuse, and memory poisoning. Most organizations are deploying these agents faster than they are building governance around them.
