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S4E.io 2025 Threat Exposure Snapshot: What Continuous CTEM Revealed at Internet Scale

By the end of 2025, Continuous Threat Exposure Management was no longer about proving feasibility. At scale, the more important question became what continuous security operations actually revealed about real-world attack surfaces over time.

This report summarizes the most common exposure patterns observed throughout 2025. Instead of highlighting isolated vulnerabilities, it focuses on categories of weakness that appeared persistently across environments, offering a practical view of what remained exposed despite continuous monitoring.

Data Scope and Statistical Confidence

Data Scope: Why This Snapshot Is Statistically Meaningful

Any meaningful discussion about threat exposure trends requires one prerequisite: scale.
The findings summarized in this report are not derived from limited pilots, isolated environments, or short lived scans. They are based on continuous security operations executed throughout 2025 across a globally distributed asset base.

By the end of 2025, S4E.io operated at the following measurable scale:

Users and Access

By the end of 2025, S4E.io had reached a stable level of recurring usage. The numbers below summarize how many users actively used the platform and how consistently they returned an important signal for any CTEM program, where continuous operations depend on continuous engagement.

41,437
Active registered users generating recurring platform activity

This reflects sustained operational usage rather than one time scans.

Asset Coverage

Verified coverage and paid portfolio scale.

370,480
Verified assets under active monitoring
35,736
Unverified assets observed during discovery and validation phases

Security Execution Volume

This is the core of “continuous” in CTEM. Instead of periodic scans, S4E.io executes security operations (tasks) continuously across assets and configurations. The metrics below reflect execution throughput and the volume of outputs produced for downstream security workflows and decision making.

945,280,612
Total security tasks executed

Includes both continuous and manually triggered operations across all scan categories.

28,835,094
Total unique scan outputs generated

Each output represents a discrete security signal used for validation, prioritization, or follow up.

7,678,699
Total URLs processed via crawling

Representing application layer discovery and exposure mapping at scale.

What This Means for the Findings That Follow

The exposure patterns discussed in the rest of this report emerge from hundreds of millions of executions and tens of millions of findings observed continuously throughout the year.

This matters because CTEM is not about identifying rare edge cases. It is about understanding:

  • Which exposure types persist
  • Which controls fail repeatedly
  • Which weaknesses remain structural rather than exceptional

The sections that follow focus on what actually surfaced most often in 2025 based on this dataset, not on theoretical risk models or isolated test results.

2025 Exposure Landscape: Findings by Category

When security operations run continuously and at scale, exposure trends become clear very quickly. Across all executions in 2025, the overwhelming majority of findings did not originate from rare or complex vulnerabilities. Instead, they clustered around a small number of recurring exposure categories that persisted across assets, environments, and geographies.

Overall Findings Distribution (2025)

The table below summarizes total findings observed by scan category throughout the year:

20,913,753
Information Scans
1,221,782
DNS Controls
296,041
SSL Controls
147,679
Web Vulnerabilities
94,512
Misconfigurations
20,280
Product Based Web Vulnerabilities
6,816
Exposed Panels
3,854
Network Vulnerabilities
1,409
Product Based Network Vulnerabilities

This distribution highlights a consistent CTEM reality: most exposure does not come from exploitable CVEs, but from continuously observable conditions related to visibility, configuration, and basic security hygiene.

Information Scans: Persistent Visibility Exposure

Information-level findings represented by far the largest category in 2025. These scans focus on service exposure, open ports, and basic network reachability rather than exploitability.

The most frequently observed signals included:

8,202,736
Top 10 TCP Ports Scan
7,452,763
TCP Top Port Service Scan
1,045,066
Ping & Reachability Scan

These findings reflect a fundamental reality of external attack surfaces: services remain exposed continuously, not temporarily. Even when vulnerabilities are patched, the underlying exposure often remains visible and reachable.

DNS Controls: Structural Exposure at Scale

DNS-related findings were the second most common category in 2025, reinforcing how frequently control-plane misconfigurations persist.

Common observations included:

512,024
DNS A Record Lookups
347,268
DNS ANY Record Queries
123,227
DNS CNAME Record Disclosures

These findings are rarely classified as critical on their own, yet they consistently provide attackers with reconnaissance value. Their prevalence demonstrates why CTEM must include continuous DNS monitoring rather than one-time validation.

SSL Controls: Expiration and Usage Issues

SSL and transport-related findings formed another significant cluster. The most common issues were not protocol breaks, but operational gaps.

Key observations included:

104,416
Certificate Expiration Monitoring
38,889
HTTP Usage Detection
37,565
Supported Cipher Enumeration

These exposures highlight a recurring pattern: encryption is widely deployed, but its lifecycle is often poorly maintained.

Web Vulnerabilities and Misconfiguration

Application-layer findings appeared at lower volumes but with higher security impact per finding.

Frequently observed web-related issues included:

69,077
Missing HTTP Security Headers
34,729
Directory Listing Exposure
19,956
Server-side Directory Enumeration

Misconfiguration findings followed a similar pattern:

  • Configuration file exposure
  • Management panel detection
  • Residual or forgotten files

These categories illustrate how application exposure often results from operational oversight rather than software flaws.

Product-Based Vulnerabilities and Exposed Panels

Product-specific vulnerabilities and exposed management interfaces represented a smaller portion of total findings, but carried elevated risk.

Observed examples included:

  • Vulnerable JavaScript libraries
  • WordPress disclosure artifacts
  • Specific CVE detections appearing at low but consistent volumes
  • Open administrative panels such as generic login pages and phpMyAdmin instances

Their lower frequency does not reduce their importance. Instead, it reinforces that CTEM is about identifying and tracking these exposures continuously until they are actually removed.

Global Distribution of Observed Exposure

Global Distribution of Observed Activity (Top Regions)

The exposure patterns observed in 2025 were not concentrated in a single geography. Platform activity and findings were distributed across multiple regions with different regulatory, economic, and infrastructure profiles.

Top countries observed in platform analytics during 2025 included:

Country Percentage
United States 18.88%
China 16.79%
India 15.95%
Türkiye 15.79%
Indonesia 7.93%
Germany 6.60%
Singapore 4.93%
United Kingdom 4.93%
Brazil 4.68%
France 3.51%

No single region dominated the dataset. Similar exposure categories appeared consistently across geographies, indicating that the observed patterns reflect global attack surface behavior rather than region-specific conditions.

What the 2025 Data Shows in CTEM Terms

The 2025 findings show a clear pattern when security operations run continuously at scale.

  • Over 90% of findings originated from information exposure, DNS, and SSL controls.
    These categories reflect persistent visibility and configuration conditions rather than isolated vulnerabilities.
  • Less than 1% of findings were product-based or CVE-specific.
    At internet scale, exploitable software flaws are significantly outnumbered by structural exposure and hygiene issues.
  • Application-layer vulnerabilities represented a small but consistent portion of total findings, indicating recurring operational weaknesses rather than one-off defects.

This distribution reflects how real-world attack surfaces behave over time. Most exposure is not created by new vulnerabilities, but by environments that continuously change faster than controls are updated.

CTEM makes these patterns visible by measuring recurrence, not novelty. Periodic scans capture snapshots. Continuous execution reveals what remains exposed.

What 2025 Revealed at Scale

Across nearly one billion security executions and tens of millions of findings, one pattern remained consistent: exposure was rarely accidental, and almost never temporary.

Most observed risk did not come from newly disclosed vulnerabilities. It came from services that stayed visible, configurations that stayed unchanged, and controls that failed repeatedly across regions and environments.

What made this visible was not a broader vulnerability catalog, but sustained observation. When security data is collected continuously, volume stops being noise and starts revealing which exposure types dominate in practice.

By the end of 2025, the takeaway was clear. The question was no longer whether exposures could be detected, but which ones continued to exist long enough to matter.