Adversaries may manipulate products or product delivery mechanisms prior to receipt by a final consumer for the purpose of data or system compromise.

Supply chain compromise can take place at any stage of the supply chain including:

* Manipulation of development tools
* Manipulation of a development environment
* Manipulation of source code repositories (public or private)
* Manipulation of source code in open-source dependencies
* Manipulation of software update/distribution mechanisms
* Compromised/infected system images (multiple cases of removable media infected at the factory)(Citation: IBM Storwize)(Citation: Schneider Electric USB Malware) 
* Replacement of legitimate software with modified versions
* Sales of modified/counterfeit products to legitimate distributors
* Shipment interdiction

While supply chain compromise can impact any component of hardware or software, adversaries looking to gain execution have often focused on malicious additions to legitimate software in software distribution or update channels.(Citation: Avast CCleaner3 2018)(Citation: Microsoft Dofoil 2018)(Citation: Command Five SK 2011) Targeting may be specific to a desired victim set or malicious software may be distributed to a broad set of consumers but only move on to additional tactics on specific victims.(Citation: Symantec Elderwood Sept 2012)(Citation: Avast CCleaner3 2018)(Citation: Command Five SK 2011) Popular open source projects that are used as dependencies in many applications may also be targeted as a means to add malicious code to users of the dependency.(Citation: Trendmicro NPM Compromise)
Supply Chain Compromise
source_name: mitre-attack  url: https://attack.mitre.org/techniques/T1195  external_id: T1195     source_name: Avast CCleaner3 2018  description: Avast Threat Intelligence Team. (2018, March 8). New investigations into the CCleaner incident point to a possible third stage that had keylogger capacities. Retrieved March 15, 2018.  url: https://blog.avast.com/new-investigations-in-ccleaner-incident-point-to-a-possible-third-stage-that-had-keylogger-capacities     source_name: Command Five SK 2011  description: Command Five Pty Ltd. (2011, September). SK Hack by an Advanced Persistent Threat. Retrieved April 6, 2018.  url: https://www.commandfive.com/papers/C5_APT_SKHack.pdf     source_name: IBM Storwize  description: IBM Support. (2017, April 26). Storwize USB Initialization Tool may contain malicious code. Retrieved May 28, 2019.  url: https://www-01.ibm.com/support/docview.wss?uid=ssg1S1010146&myns=s028&mynp=OCSTHGUJ&mynp=OCSTLM5A&mynp=OCSTLM6B&mynp=OCHW206&mync=E&cm_sp=s028-_-OCSTHGUJ-OCSTLM5A-OCSTLM6B-OCHW206-_-E     source_name: Symantec Elderwood Sept 2012  description: O'Gorman, G., and McDonald, G.. (2012, September 6). The Elderwood Project. Retrieved February 15, 2018.  url: https://web.archive.org/web/20190717233006/http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/the-elderwood-project.pdf     source_name: Schneider Electric USB Malware  description: Schneider Electric. (2018, August 24). Security Notification – USB Removable Media Provided With Conext Combox and Conext Battery Monitor. Retrieved May 28, 2019.  url: https://www.se.com/ww/en/download/document/SESN-2018-236-01/     source_name: Trendmicro NPM Compromise  description: Trendmicro. (2018, November 29). Hacker Infects Node.js Package to Steal from Bitcoin Wallets. Retrieved April 10, 2019.  url: https://www.trendmicro.com/vinfo/dk/security/news/cybercrime-and-digital-threats/hacker-infects-node-js-package-to-steal-from-bitcoin-wallets     source_name: Microsoft Dofoil 2018  description: Windows Defender Research. (2018, March 7). Behavior monitoring combined with machine learning spoils a massive Dofoil coin mining campaign. Retrieved March 20, 2018.  url: https://cloudblogs.microsoft.com/microsoftsecure/2018/03/07/behavior-monitoring-combined-with-machine-learning-spoils-a-massive-dofoil-coin-mining-campaign/     