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Author Archives: Mycroft

What is more safe for browsing the web: PC or smartphone?

Posted on May 5, 2019 by Mycroft

The scenario is: somebody without concern about security is navigating through the web. This person will access doubtful websites, like adult content or media sharing, for example.

Between a pc with Windows and a smartphone… Continue reading What is more safe for browsing the web: PC or smartphone?→

Posted in malware, websites

Is it a bad idea using two firewalls on the same PC?

Posted on April 24, 2019 by Mycroft

If i’m using windows default firewall and a third-party firewall, is it represents a security issue or I have to worry just with possible conflicts? And what type of conflicts could exists?

Continue reading Is it a bad idea using two firewalls on the same PC?→

Posted in firewalls

Is there a risk to block multicast?

Posted on April 20, 2019 by Mycroft

I’m thinking to block multicast traffic in my firewall, both sending to local multicast and receiving from local multicast. Is there any security risks or possible known problems for doing that? My intention is block all comm… Continue reading Is there a risk to block multicast?→

Posted in firewalls, network

Tools to determine if a website is malicious [on hold]

Posted on April 18, 2019 by Mycroft

I think VirusTotal is the most common tool for this purpose, so I would like to know another tools to find out if a website is malicious or not (like download malware or other bad stuff).

I ask this because my father accesse… Continue reading Tools to determine if a website is malicious [on hold]→

Posted in malware, web-scanners, websites

Is there a risk in remote access for the person that is remoting in?

Posted on April 16, 2019 by Mycroft

It is obvious that the machine that is receiving a connection is exposed to malicious actions, but is there a risk for the machine that is remoting in, as a virus or worm spread through this connection?

Continue reading Is there a risk in remote access for the person that is remoting in?→

Posted in Remote Desktop

Possible risks of multicast

Posted on April 11, 2019 by Mycroft

I noticed that a android in my network is constantly connect to Multicast DNS IP. I seen this because my firewall block this inbound connection. Other devices connects to that IP too, but this android in specific seems to do … Continue reading Possible risks of multicast→

Posted in Android, dns, network

About Android’s PNG vulnerability

Posted on April 10, 2019 by Mycroft

I’m curious about this vulnerability. I know that can execute code remotely and needs user interaction, but what type of interaction? Download the image? Copy it? I will appreciate if someone can answer me.

Continue reading About Android’s PNG vulnerability→

Posted in Android, Vulnerability

BadUSB device functionality

Posted on April 6, 2019 by Mycroft

I would like to know if a BadUsb can simulate a real device or it just execute programmed functions and stop working. For example, if a “mouse” is a BadUsb, when I plug it in a PC, will it work like a real mouse and allow me … Continue reading BadUSB device functionality→

Posted in BadUSB

What is more safe: 3g/4g or public wifi?

Posted on April 2, 2019 by Mycroft

The scenario is: John is out of home and, using his smartphone, he need to send some messages from Whatsapp, use Facebook’s app and do some bank operations.

Since I have read this and this topics, I’m thinking about what is… Continue reading What is more safe: 3g/4g or public wifi?→

Posted in Android, gsm, man-in-the-middle, Mobile, wifi

Can my father’s smartphone be compromised?

Posted on March 30, 2019 by Mycroft

My father told me that he allowed the installation of apps from unknown sources when he was asked to do it to go further with something (he said that he doesn’t remember when or what he was doing).

In android 8.0 (the version of his smar… Continue reading Can my father’s smartphone be compromised?→

Posted in Android, detection, malware

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