In such a case, if you use any public Wi-Fi anywhere whose password is saved once upon your smartphone. But if you can not see it, then today we will tell you how to know the password of the Wi-Fi network.

Before starting, let me know that this process works only on Android devices. In addition, you can not get the admin access to Wi-Fi access without having access to this because this information is stored in the system's system folder.

Step 1 - First you need to install WiFi password viewer (root) from Google Play Store.

Step 2- Once the app is installed, allow all the things the app is asking for you. This will allow the app to read that save file, where your Wi-Fi passwords are stored.

Step 3- After giving permission on your behalf, the app will release a list of all the network password that you have already connected.

Step 4- If you want to share it with your friends, then tap an entry in the list, where you can copy the password to the clipboard or share it via any app. Also, you can also create a QR code.

Most of Smartphone app share your personal data with third-party comapnies like google Analytics, the facebook graph API or etc  , this is data privacy issue.

When people install a new  Android or iOS app, it asks the user's permission before accessing personal information. afthar that these app are collect the information from your phone as like contact number,message and etc.

and it can share your data with anyone the app's developer wants to -- letting third-party companies track where you are, how fast you are moving and what you are doing.
To get a picture of what data are being collected and transmitted from people's smartphones, the researchers from IMDEA Networks Institute in Spain developed a free Android app of their own, called the Lumen Privacy Monitor.

Because Lumen is about transparency, a phone user can see the information installed apps collect in real time and with whom they share these data.
"We try to show the details of apps' hidden behaviour in an easy-to-understand way. It's about research, too, so we ask users if they'll allow us to collect some data about what Lumen observes their apps are doing - but that doesn't include any personal or privacy-sensitive data," the researchers said in a statement released by the institute.

"We discovered 598 internet sites likely to be tracking users for advertising purposes, including social media services like Facebook, large internet companies like Google and Yahoo, and online marketing companies under the umbrella of internet service providers like Verizon Wireless," the study said.


Mobile App Protection

Your mobile applications can present material organizational risk, including intellectual property theft, operational disruption, software piracy, and data loss. Below are some examples.

1.Mobile apps may be modified with malware and placed on the public app marketplace.
2.Mobile apps proprietary business logic can be inspected and/or copied.
3.Mobile apps security and license checks may be circumvented.
4.Debugging mobile apps may allow access to sensitive data such as personally identifiable or regulated information.
5.Reverse engineering mobile apps can readily expose potential vulnerabilities and unlock otherwise secure access to high-value services.

OpenVPN this week patched several vulnerabilities impacting various branches, including flaws that could be exploited remotely.

Four of the bugs were found by researcher Guido Vranken through fuzzing, after recent audits found a single severe bug in OpenVPN. While analyzing OpenVPN 2.4.2, the researcher found and reported four security issues that were addressed in the OpenVPN 2.4.3 and OpenVPN 2.3.17 releases this week.read more

Windows 10 does disable some third-party security software, Microsoft’s application compatibility teams found that roughly 95 per cent of Windows 10 PCs had an antivirus application installed that was already compatible with Windows 10 Creators Update,” said Rob Lefferts, director of security in the Windows and Devices group

But what about the 5 percent that weren’t compatible in Microsoft’s eyes? Lefferts says:"For the small number of applications that still needed updating, we built a feature just for AV apps that would prompt the customer to install a new version of their AV app right after the update completed. To do this, we first temporarily disabled some parts of the AV software when the update began. We did this work in partnership with the AV partner to specify which versions of their software are compatible and where to direct customers after updating".

Kaspersky is worried that Microsoft is trying the same trick, but – based on Lefferts' post – Redmond is ready to fight such claims "it has designed its own security software to only kick in when "an AV subscription expires, and the AV application decides to stop providing protection to the customer."

Network Mapper is power full tool  which is use to Nmap network discovery and security auditing , Nmap is a free and open source utility.Nmap runs on all major computer operating systems, and official binary packages are available for Linux, Windows, and Mac OS X. In addition to the classic command-line Nmap executable, the Nmap suite includes an advanced GUI and results viewer (Zenmap), a flexible data transfer, redirection, and debugging tool (Ncat), a utility for comparing scan results (Ndiff), and a packet generation and response analysis tool (Nping).

NMAP is..
Free:- The primary goals of the Nmap Project is to help make the Internet a little more secure and to provide administrators/auditors/hackers with an advanced tool for exploring their networks. Nmap is available for free download, and also comes with full source code that you may modify and redistribute under the terms of the license.

Portable:- Most operating systems are supported, including Linux, Microsoft Windows, FreeBSD, OpenBSD, Solaris, IRIX, Mac OS X, HP-UX, NetBSD, Sun OS, Amiga, and more.

Flexible:- Supports dozens of advanced techniques for mapping out networks filled with IP filters, firewalls, routers, and other obstacles. This includes many port scanning mechanisms (both TCP & UDP), OS detection, version detection, ping sweeps, and more.

"The Nmap Scripting Engine (NSE) is one of Nmap’s most powerful and flexible features. It allows users to write (and share) simple scripts to automate a wide variety of networking tasks. Those scripts are then executed in parallel with the speed and efficiency you expect from Nmap. Users can rely on the growing and diverse set of scripts distributed with Nmap, or write their own to meet custom needs".
Examples:
Scan multiple IP address or subnet (IPv4)
nmap 192.168.10.1 192.168.10.2 192.168.10.3
## works with same subnet i.e. 192.168.10.0/24
nmap 192.168.10.1,2,3

Finally, you scan an entire subnet:
nmap 192.168.10.0/24

Find out if a host/network is protected by a firewall
nmap -sA 192.168.10.254
nmap -sA blackhole.n0where.net

Scan a host when protected by the firewall
nmap -PN 192.168.10.1
nmap -PN blackhole.n0where.net

How do I perform a fast scan?
nmap -F 192.168.10.1

Show host interfaces and routes
nmap --iflist

How do I save output to a text file?
nmap 192.168.10.1 > output.txt
nmap -oN /path/to/filename 192.168.10.1
nmap -oN output.txt 192.168.10.1

Scan a firewall for MAC address spoofing
### Spoof your MAC address ##
nmap --spoof-mac MAC-ADDRESS-HERE 192.168.10.1

### Add other options ###
nmap -v -sT -PN --spoof-mac MAC-ADDRESS-HERE 192.168.10.1


### Use a random MAC address ###
### The number 0, means nmap chooses a completely random MAC address ###
nmap -v -sT -PN --spoof-mac 0 192.168.10.1

Scan for IP protocol
IP protocols (TCP, ICMP, IGMP, etc.) are supported by target machines
nmap -sO 192.168.10.1

Find out the most commonly used TCP ports using TCP SYN Scan.
### Stealthy scan ###
nmap -sS 192.168.10.1

### Find out the most commonly used TCP ports using  TCP connect scan (warning: no stealth scan)
###  OS Fingerprinting ###
nmap -sT 192.168.10.1

### Find out the most commonly used TCP ports using TCP ACK scan
nmap -sA 192.168.10.1

### Find out the most commonly used TCP ports using TCP Window scan
nmap -sW 192.168.10.1

### Find out the most commonly used TCP ports using TCP Maimon scan
nmap -sM 192.168.10.1

Scan a host using UDP ping
This scan bypasses firewalls and filters that only screen TCP.
nmap -PU 192.168.1.1
nmap -PU 2000.2001 192.168.1.1

                                                              Free Download