Their job is to serve up ads as often as possible. And the makers of those sneaky apps aren’t really worried about customer satisfaction. Kaspersky’s findings are the latest reminder that mobile devices remain attractive targets for nuisance adware. The cybersecurity company says the store has taken down most of the apps since the researchers reported them, but a handful were still available as of Monday morning. More than 20 of the “Minecraft” mods recently available in the Google Play Store didn’t do much for the game at all, and instead displayed ads on smartphones and tablets “in an extremely intrusive manner,” according to researchers at Kaspersky.

If you pay attention to app-store security, you can probably guess where this is going, especially if you have kids. For mobile versions of the game, those “mods” can be downloaded as separate apps.

Part of the appeal of “Minecraft” is that the in-game experience is highly customizable with thousands of bits of third-party software.

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