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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
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SanDisk Ultra 32GB microSDHC memory card + adapter up to 98 MB / s, Class 10, U1, A1, FFPSanDisk Ultra 32GB microSDHC memory card + adapter up to 98 MB / s, Class 10, U1, A1, FFP
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SanDisk Extreme MicroSDXC Class 10 Memory Card with SD Adaptor, Gold/Red 64GBSanDisk Extreme MicroSDXC Class 10 Memory Card with SD Adaptor, Gold/Red 64GB
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Verbatim, Black  64 gbVerbatim, Black 64 gb
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Pack of 2 Micro SD Card (A1, U3, C10,V30,4K,667X), TF Memory Card up to 100 m/s for Cameras, Dashcam, Switch and Smartphones 32 GBPack of 2 Micro SD Card (A1, U3, C10,V30,4K,667X), TF Memory Card up to 100 m/s for Cameras, Dashcam, Switch and Smartphones 32 GB
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GiBot USB Type C Card Reader, SD/Micro SD Card Reader, Memory Card Reader with Micro USB OTGGiBot USB Type C Card Reader, SD/Micro SD Card Reader, Memory Card Reader with Micro USB OTG
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Sandisk Ultra 128GB MicroSDXC Class 10 Memory Card and Adaptor up to 100MB/sec, U1, A1, FFP, Grey, Red 128 GBSandisk Ultra 128GB MicroSDXC Class 10 Memory Card and Adaptor up to 100MB/sec, U1, A1, FFP, Grey, Red 128 GB
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SanDisk Extreme microSDHC 3 Rescue Pro Deluxe Memory Card, Red/Gold 128gbSanDisk Extreme microSDHC 3 Rescue Pro Deluxe Memory Card, Red/Gold 128gb
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UGREEN USB C Card Reader USB 3.0 Card Reader SD Micro SD Adapter to USB-C Card Reader USB Type C Compatible with Thunderbolt 3 for MacBook Pro, iPad Pro 2018, Samsung S20/S10, A51, Huawei P30 etc.UGREEN USB C Card Reader USB 3.0 Card Reader SD Micro SD Adapter to USB-C Card Reader USB Type C Compatible with Thunderbolt 3 for MacBook Pro, iPad Pro 2018, Samsung S20/S10, A51, Huawei P30 etc.
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As of 2020-05-27 02:34
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Safe Data-Wipe

The day will come: your good-old Android shall get replaced by a newer model. If you no longer need the "old one", you probably want to give it away. But you certainly don't want the new owner accessing your sensible data which might have been stored on it. So what to do?

There's of course the Factory-Reset. But does it really sanitize your data in a way they cannot be (easily) restored? Unfortunately, that's not the case: though they are deleted, they are not wiped – so with the right tools, they could be restored. Admitted, that takes some little knowledge and work – but it's possible. A good counter-measure is to really "nuke" or "wipe" the storage – i.e. overwrite it with "random patterns". Corresponding guidelines are described by the National Institute of Standards and Technology (NIST) in a PDF Dokument.

Secure Wipe

2020-05-14

Automated Deletion

2020-05-14

Not quite a safe wipe as described above – but still a welcome helper: automatically do a factory-reset / delete all files, if the number of unsuccessful unlock-trials exceeds a certain threshold. That at least makes it more difficult for the attacker to access your data. Unfortunately, none of the few apps in this group is available anymore.

De-Deletion (Recovering)

2020-05-25

Further Readings:

2020-05-25