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Ok, thanks a lot for the great piece of guidance.

Thanks a lot Reed. Below are the outputs from my system. Step1: codesign -dvvv /Volumes/EaseUS\ Data\ Recovery\ Wizard/EaseUS\ Data\ Recovery\ Wizard.app Executable=/Volumes/EaseUS Data Recovery Wizard/EaseUS Data Recovery Wizard.app/Contents/MacOS/DRWLoader Identifier=com.easeus.datarecoveryloaderapp Format=bundle with Mach-O universal (i386 x86_64) CodeDirectory v=20200 size=436 flags=0x0(none) hashes=14+3 location=embedded Hash type=sha1 size=20 CDHash=96bd0c92364d28ebce9608f2d69df22574544627 Signature size=4283 Authority=Developer ID Application: CHENGDU Yiwo Tech Development Co., Ltd (DLLVW95FSM) Authority=Developer ID Certification Authority Authority=Apple Root CA Signed Time=Jun 15, 2017, 8:28:25 AM Info.plist entries=23 TeamIdentifier=DLLVW95FSM Sealed Resources version=2 rules=12 files=12 Internal requirements count=1 size=192 Step2: spctl --assess /Volumes/EaseUS\ Data\ Recovery\ Wizard/EaseUS\ Data\ Recovery\ Wizard.app <Nothing returned as output> Based on the above results 1. May I know is it safe to assume that nothing is suspicious please? 2. Below is the url from where I downloaded the software, do you think it is malicious please? https://www.easeus.com/data-recovery/deleted-recovery-software/recover-deleted-files-external-flash-drive.htm 3. One additional question, is MAC capable of identifying and quarantine the viruses from the external HDD too automatically please? esp: OS version Yosemite 10.10.5. 4. Are there any steps to run the malware quarantine in MAC please? Thanks in advance again.

Dear All, I am a new MAC user and I have OS X Yosemite 10.10.5. Recently I was in a need to recover deleted files from my WD external HDD, so I plugged in the external hdd to my MACBook , searched in google and downloaded a software named "EaseUS Data Recovery Wizard for Mac" from the website easeus.com, installed the same and ran a scan pointing to me external hdd. However due to recent news about ransomware/virus attacks , I was trying to see if the software that I downloaded is a legitimate one by searching if it has a legitimate certificate , but could not find one(may be it's just me). So if I may wanted to reach out to the experts here 1. to see if it is a legitimate software and also 2. to request for steps to run to detect malware detection if possible please. The instllaer name was mac_drw_trial.dmg, I installed it by being in offline mode , it started a process named DRWTray. Kindly guide me here please. Also please note that I am not saying it is a malware or ransomware but seeking guidance to get clarified Thank You so much in advance