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Sophos NDR

2.1.0Released May 14, 2026 commercial

Sophos NDR (Network Detection and Response) monitors network traffic to detect and respond to threats, suspicious activity, and anomalous behaviour across an organisation's environment.

Summary

Sophos NDR is a commercial network-analysis tool that monitors network traffic to detect and respond to threats, suspicious activity, and anomalous behaviour across an organisation's environment. It is run as a service and is intended for SOCSOCA security operations center, the team or function that monitors threats, investigates alerts and coordinates incident response. Its work can be internal, outsourced or shared. analysts. Its documentation positions it alongside similar solutions in the network-detection space, and tracking shows two releases within the period we observe, with the last one occurring 116 days ago.

Sophos NDR (Network Detection and Response) monitors network traffic to detect and respond to threats, suspicious activity, and anomalous behaviour across an organisation's environment.

How Sophos NDR helps

Which devices on this network are talking to infrastructure they have no business talking to?

correlates observed traffic against threat intelligence and behavioural baselines and flags the connections that fall outside normal patterns for that device

Is there activity happening right now that no other security tool has caught?

watches traffic continuously for suspicious and anomalous behaviour rather than relying on signatures alone, surfacing patterns that indicate an active threat

Which hosts are behaving differently than they normally do?

builds a baseline of typical behaviour for devices across the environment and calls out deviations from that baseline as anomalies worth investigating

How far has a threat spread once it lands on one machine?

tracks traffic and behaviour across the environment so a detected threat on one device can be followed through its connections to others

What should the SOC team look at first out of everything happening on the network?

detects and prioritises suspicious and anomalous activity so analysts are pointed at the threats and behaviours that matter rather than raw traffic volume

all 3 features, with the evidence for each →

Languages

Not documented

Features

3 capabilities

Built from Sophos NDR's releases, docs, README and our own runs. “Seen” marks the month we first spotted a release the vendor didn't date. Group names and tags are our labels.

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  • Sophos NDR covers 2 of the 34 network analysis capabilities we track.

What Sophos NDR offers you

  • ML-based detection1
  • On-premises appliance1
All capabilities 3 capabilities
ISO-based appliance deployment shipped Provides an ISO installer to deploy NDR on certified hardware with a user-friendly interface. 2 releases · 1 other source · first seen Feb 2026

Also counts toward: On-premises appliance

release

  • Adds new ISO installer for certified hardware with an easy-to-use UI 2.0.0Released February 20, 2026 · Feb 2026 · source · release history
  • Provides a new ISO installer for certified hardware with an updated UI 2.0.0Released February 20, 2026 · Feb 2026 · source · release history

example

  • Use the new ISO installer to deploy NDR on certified hardware. Download the 2.0.0 ISO from the Sophos portal and boot your certified hardware appliance. 2.0.0Released February 20, 2026 · Feb 2026 · source
PCAP traffic replay shipped Injects simulated malicious and benign traffic into the NDR appliance to test detection capabilities. 2 releases · first seen May 2026

Shared capability: Packet crafting and generation

release

  • Adds a new pcap replay feature in Sophos Central to inject malicious and benign traffic for testing detections 2.1.0Released May 14, 2026 · May 2026 · source · release history
  • New pcap replay feature in Sophos Central to inject malicious and benign traffic into your NDR appliance for testing detections. 2.1.0Released May 14, 2026 · May 2026 · source · release history
Unsupervised anomaly detection shipped Detects anomalies in network traffic based on historical entity activity using behavioral models. 2 releases · first seen May 2026

Shared capability: Network anomaly detection

Also counts toward: ML-based detection

release

  • Beta unsupervised anomaly detection integrated into the Data Detection Engine (DDE) using a behavioral model to detect anomalies based on historical entity activity. 2.1.0Released May 14, 2026 · May 2026 · source · release history
  • Introduces integrated unsupervised anomaly detection in the Data Detection Engine (DDE) as a beta feature 2.1.0Released May 14, 2026 · May 2026 · source · release history

Lines in monospace are the tool's own words: help text parsed from its source, or an endpoint from its API document. Under release, a line is our summary of a dated release. Under docs, it is quoted from the tool's own documentation or website. Each links back to the source it came from.

Score card

  1. Shipping velocity releases a month, last 12 months
  2. Documentation quality release-notes rubric, 0–100
  3. Breaking-change discipline how rarely a release breaks users, and notice given
  4. Maintenance risk quiet time against its own cadence, maintainers
  5. Innovation & surface new capabilities, API and MCP surface

Five scores for Sophos NDR, each built from the releases, notes and API history this site tracks — and, on Researcher and Business, where it stands among every measured tool in its category and how that has moved.

Score cards are part of every paid plan.

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Each score is 0–100 on a published rubric, derived from data this site already shows. A dimension we cannot measure says so — it is never scored 0 and never enters a rank.

How this is scored
  • Shipping velocity — releases a month over the last 12 months, on a log scale where 16 a month scores 100. Needs 3 releases in the window.
  • Documentation quality — the release-notes rubric published on the analytics page, unchanged.
  • Breaking-change discipline — the share of releases carrying a breaking change (none scores 100, half or more scores 0). Only projects that label breaking changes are measured: a clean record cannot be told from an unlabelled one.
  • Maintenance risk — quiet time measured against the tool's own release cadence (quiet longer than 90 days and three typical gaps scores 0), plus the number of active maintainers and whether contributors are growing, where known. Higher is lower risk.
  • Innovation & surface — new capabilities in the feature ledger this year, API and MCP operations added, and the share of commits that are features: the mean of whichever we hold.
  • Community health (open-source tools only) — each is a direction, not a size: contributors this year against last, the bus factor now against a year ago, and issues closed per issue opened, where steady scores 50, doubled 100 and halved 0; plus the median time to a maintainer's first reply (an hour scores about 100, a month or more 0). A commercial card has no repository and carries none of the four.
  • Documented delivery (commercial tools) — when a vendor's documented new capabilities have slowed against its own baseline, that counts against the overall standing as heavily as two low dimensions. Steady delivery, or too little history to judge, leaves the standing alone; it is never a sixth score.
  • Open-source tools are scored on repository signals; commercial tools on their published changelog. Ranks compare tools within one category and one profile and need at least five measured peers; the overall standing needs three ranked dimensions. Best-in-breed or consolidator is a shape, not a quality, and is never scored.

Release-note detail over time

See how much detail Sophos NDR puts in its release notes, quarter by quarter, and compare it with tracked tools in the same category. This history uses up to ten retained, reviewed notes per tool; sparse or blank older quarters may reflect that limit.

Checking release-note history…

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Website history

sophos.com, every change

Sophos's home page and 1 more page as they looked each month from September 2021 to October 2026: 12 renders, 3 changes of tagline or palette. Step through them, play them, or put any two months side by side.

Website history is included with Researcher and Business.

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Releases

2 entries

  1. May 20261
  2. February 20261

    2 entries

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