Factsheets
On this page GreyOps shares practical security advice for mobile devices. Because we want to contribute broadly to better security, we make this information available to everyone. The threat from mobile malware is growing fast: capable spyware is no longer reserved for the best-equipped services. Countries with limited cyber capability and/or that are less scrupulous about human rights, and even criminal organisations, now have it at their disposal.
When new threat information appears we update the advice, so that it keeps giving a current picture of the relevant risks and measures. Updates can be followed through the RSS feed.
Sources: NCTV, Cybersecuritybeeld Nederland 2025 (Dutch), 26 November 2025, and NCSC and NCA, The threat from commercial cyber proliferation, 19 April 2023.
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Available
Hardening iOS against spyware
All the settings and good habits that reduce vulnerability, ordered from no impact on convenience to maximum protection.
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In preparation
Hardening Android against spyware
All the settings and good habits that reduce vulnerability. In Android the menus differ per manufacturer, so the name of the setting and its most common location are the starting point.
These factsheets are freely available and offer practical measures. Advice from GreyOps goes further: tailored to your threat profile, your environment and your specific risks. Read more about electronic security surveys, security consulting and briefings by GreyOps.