“This article is intended to make #RIPE_Atlas users aware of ethical issues that could arise when using RIPE Atlas. We do not intend to propose any new formal processes or procedures to address the relevant ethical issues, but we do want to encourage members of the RIPE Atlas community to consider the ethical impact of their behaviour when using RIPE Atlas.”
Not only for the RIPE Atlas users, all the persons doing active measurements on the Internet should read and think about it:
▻https://labs.ripe.net/Members/kistel/ethics-of-ripe-atlas-measurements