Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
97 detections
Filters
Last updated
All Time
Detection languages
58
14
10
9
3
Contributors
31
14
8
8
5
Categories
47
40
26
19
14
Platforms
50
21
13
11
9
Products / Services
17
14
13
9
8
MITRE Techniques
18,114
15,633
12,576
8,388
6,215
CVEs
4
1
1
IDS Classtypes
6
6
2
IDS Protocols
4
4
3
2
This rule detects a high volume (50 or more) of HTTP errors (status codes 400 and above) originating from a single client IP address within a 5-minute time window. This behavior can be indicative of various malicious activities such as brute-force attacks, web application vulnerability scanning, or denial-of-service attempts against a web server.
This rule detects an unusually high number of web search queries (identified by 'search' or 'query' in the URI) originating from a single IP address within a one-hour window. A threshold of 100 or more queries triggers the alert. This behavior could indicate automated activity such as web scraping, reconnaissance, or a denial-of-service attempt against the search functionality.
Detects repeated restarts of vLLM pods (due to OOMKilled, CrashLoopBackOff, or other failure reasons) that are correlated with a burst of multimodal requests. This pattern can indicate a denial-of-service attack, resource exhaustion, or exploitation of vulnerabilities (such as CVE-2026-22778) targeting the vLLM service, potentially leading to service instability or compromise.
This rule detects a high volume of web requests (20 or more within 5 minutes from a single IP address) containing keywords commonly associated with denial-of-service (DoS) attacks, performance testing, or reconnaissance activities against web applications. Keywords include 'sleep', 'benchmark', and 'loadtest' in the URI query string.
Detects NTP reflection amplification DDoS attack traffic
Detects exploitation of application vulnerabilities for denial of service
Detects email bombing attacks via high-volume inbound email delivery
This rule identifies an anomalous surge in network connection attempts to a particular remote IP address. It establishes a baseline of average daily connection counts to each remote IP over the past week. It then compares the current hourly connection count to this baseline, triggering an alert if the current count is more than five times the baseline and surpasses a total of 500 connections within that hour. This could indicate various malicious activities such as data exfiltration, command and control communication, or a denial-of-service attack originating from the monitored environment.
Detects TCP SYN flood denial of service attacks targeting internal hosts
Detects exploitation of application vulnerabilities for denial of service
Detects an unusually high volume (100 or more within an hour) of API calls (POST, DELETE, PUT methods to URIs containing 'api') originating from a single IP address. This activity could indicate various malicious behaviors such as brute-force attacks, credential stuffing, web application attacks, or a denial-of-service attempt against the API endpoint.
This rule detects unusual network connection patterns characterized by a high volume of connections to a remote IP address within a 5-minute window, combined with anomalous connection durations. Specifically, it flags scenarios where there are more than 1000 connections and either the 95th percentile of connection durations is very short (less than 50ms) or the 5th percentile of connection durations is very long (greater than 30000ms). These patterns can indicate activities such as network scanning, denial-of-service attempts, or command and control communication.
Detects TCP SYN flood denial of service attack patterns
Detects OS-level TCP connection exhaustion for denial of service
Detects an unusually high volume of web requests (1000 or more per minute) originating from a single IP address to an IIS web server. This pattern can indicate various malicious activities such as brute-force attacks, denial-of-service (DoS) attempts, or aggressive web scanning.
This rule detects a high volume of HTTP/2 requests (more than 3000 per minute) originating from a single remote IP address, especially when these requests target a diverse set of URIs (more than 10 distinct URIs). This pattern can indicate a denial-of-service (DoS) attack, a web scanner, or other malicious automated activity attempting to overwhelm a service or enumerate resources.
This rule detects a high volume of web requests (20 or more within 5 minutes from a single IP address) containing keywords commonly associated with denial-of-service (DoS) attacks, performance testing, or reconnaissance activities against web applications. Keywords include 'sleep', 'benchmark', and 'loadtest' in the URI query string.
Detects NTP reflection amplification DDoS attack traffic
Detects IP addresses generating a high volume of web requests to an IIS server where the referrer is external to the host. This can indicate web scraping, reconnaissance, or denial-of-service attempts.
This rule detects a high volume (50 or more) of HTTP errors (status codes 400 and above) originating from a single client IP address within a 5-minute time window. This behavior can be indicative of various malicious activities such as brute-force attacks, web application vulnerability scanning, or denial-of-service attempts against a web server.
This rule detects a high volume of web requests (20 or more within 5 minutes from a single IP address) containing keywords commonly associated with denial-of-service (DoS) attacks, performance testing, or reconnaissance activities against web applications. Keywords include 'sleep', 'benchmark', and 'loadtest' in the URI query string.
Page 2 of 5