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Security in Android apps


 
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Security in Android apps

Hi,
I am Conrad

I was wondering, if anybody would be able to hack accounts on Android apps.
I mean for example we are logged on ebay or Facebook app, and we simply quit to home screen, without logging out, and also disconnect from network and again turn on network.
-To the point, Is it technically possible if anybody would hack our session, when we logged?
Of course we're using WiFi in home with WPA2, not public hotspot.

- How does situation look like with bank apps? Is it any risk when I immediately leave the app without logging out,
-But in web browser on android, on Facebook, is it possible to take over session?

-I 've found VPN app "Zenmate" on Google Play is that proper VPN? , is it worth to use it? or that is a piece of junk?

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Test Your Knowledge in Computers #178
Difficulty: Medium
The Apple Computer Company was founded on April 1, 1978.
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SafeEjectGPU(8) 					    BSD System Manager's Manual 					   SafeEjectGPU(8)

NAME
SafeEjectGPU -- Facilitate safe eject/disconnect of eGPU(s) from system SYNOPSIS
SafeEjectGPU [gpuid <gpuid>] [gpus] [apps] [status] [Eject] [Initiate] [Relaunch] [Finalize] [Cancel] [RelaunchPID <PID>] ... DESCRIPTION
The SafeEjectGPU command is used to prepare for safe eject/disconnect of eGPUs from the system. This involves interacting with apps to migrate off of ejecting eGPU(s), and triggering the eject itself. This tool can also be used to view what GPUs are attached to the system, their eject status, and what apps hold references to each. A list of commands and their descriptions - note that commands affecting state are capitalized, and that multiple (including repeated) com- mands can occupy the same command line: gpus Lists attributes of GPUs currently attached to system (gpuid, vendor/model, flags) gpuid <gpuid> Specifies which GPU(s) subsequent commands apply to. The default (0x0000) means all eGPUs. See output of gpus command for valid <gpuid> values (of the form 0x7005) to use. apps Lists apps holding references to specified GPU - and app attributes/properties like PID, RPID, USER, PROCESS, APIS (Metal, GL/CL, GVA), BUNDLE_IDENTIFIER, PATH, GPUEjectPolicy and GPUSelectionPolicy where specified. status Shows eject state of specified eGPU(s) (Present, Initiated, Finalized). Eject Performs the full Eject sequence ( Initiate + Relaunch + Finalize ) of specified GPU(s). Initiate Initiates eject of specified eGPU(s). These eGPUs are temporarily hidden from API instantiations. Relaunch Interacts with apps that hold references to specified eGPU(s) - to facilitate migration to remaining GPUs. Finalize Finalizes eject of specified eGPU(s) - must be physically unplugged before they can be used again. Cancel Cancels initiated eject of specified GPU(s) - instead of Finalized. RelaunchPID <PID> Apply relaunch stimulus to one particular PID - for app relaunch stimulus testing. EXAMPLES
$ SafeEjectGPU gpus List eGPUs. Output is useful for cut-n-paste of example specified gpuid values used below $ SafeEjectGPU gpus apps status List all eGPUs and Apps on all eGPUs along with eject status of all eGPUs $ SafeEjectGPU Eject Perform full Eject sequence on all eGPUs $ SafeEjectGPU gpuid 0x7005 Eject Perform full Eject sequence on specified eGPU $ SafeEjectGPU gpus apps gpuid 0x7153 apps Lists all eGPUs and apps on all eGPUs and on integrated GPU as well $ SafeEjectGPU Initiate RelaunchPID 12345 Cancel Hide eGPUs and send relaunch stimulus to PID without doing full eject PLIST PROPERTIES
The following properties are generally inferred. Some values can be specified in the app's Info.plist. They affect eGPU eject and API selection behaviors. Generally, these properties won't need to be specified: GPUEjectPolicy Inferred/Settable GPUEjectPolicy values for dealing with apps that needs to drop references to ejecting eGPU. Establisehd in app bundle's Info.plist. Possible values: relaunch Send AppKit quit-with-save event followed by open-with-restore (relaunch app using alternate GPU(s)). wait Just wait for GPU references to drop (without sending events or signals). kill Use sigKill to force app exit (for apps that will relaunch via launchd - using alternate GPU(s)). ignore Ignore - necessary for some internal GPU/display components - working to eliminate its use. Inferred-Only GPUEjectPolicy values (you can't specify these values, but you'll see them as defaulted/inferred policies in apps out- put): wrelaunch Wait momentarily for processing of Metal GPU change notifications before resorting to relaunch (as necessary). jrelaunch Just relaunch without waiting (since OpenGL/OpenCL are in use). rwait When a process is subordinate to another, "responsible", process (see RPID column), Eject actions apply to the responsible process, who in turn deals with subordinates to eliminate their ejecting eGPU references. GPUSelectionPolicy Settable values that affect instantiation of Metal and OpenGL/CL contexts (wrt eGPU use). Established in app bundle's Info.plist. Possible values: avoidRemovable Avoid creation of MTLCommandQueues, and OpenGL/CL contexts on eGPUs. preferRemovable Prefer creation of MTLCommandQueues, and OpenGL/CL contexts on eGPUs. SEE ALSO
plist(5) sudo(8) launchd(8) HISTORY
The command line SafeEjectGPU tool first appeared in the 10.13.4 release of Mac OS X. Mac OS X January 22, 2018 Mac OS X

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