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Count the number of Duplicates Write a function that will return the count of distinct case-insensitive alphabetic characters and numeric digits that occur more than once in the input string.The input string can be assumed to contain only alphanumeric characters, including digits, uppercase and lowercase alphabets. Example "abcde" -> 0 # no characters repeats more than once "aabbcde" -> 2 # 'a' and 'b' "aabbcdeB" -> 2 # 'a' and 'b' "indivisibility" -> 1 #

声明：本文由expsky@MS509Team原创，仅用于技术交流分享 挺长时间没做逆向分析了，以前做逆

Update: The McAfee team has developed a tool that can be used in an effort to recover files that have been...

The post “WannaCry” Ransomware Spreads Like Wildfire, Attacks Over 150 Countries appeared first on McAfee Blog.

The new EternalBlue NSA exploit is powering a wave of virulent ransomware sweeping across Europe.

The following is a select list of questions and answers that we hope will shed more light on the botnet.

With a growth rate of 1,473% in 2016, the hunt for vulnerable IoT devices rages on...

Risk assessments are a key part of a security program, but their execution and format are highly variable. Regulators can sanction organizations that perform improper or inadequate risk assessments.

Today, we released security updates to provide additional protections against malicious attackers. By default, Windows 10 receives these updates automatically, and for customers running previous versions, we recommend they turn on automatic updates as a best practice. More information about this month’s security updates can be found on the Security Update Guide.

Today’s security updates include three updates that exemplify how the security ecosystem can come together to help protect consumers and enterprises. We would like to thank FireEye and ESET for working with us. Customers that have the latest security updates installed are protected against the attacks described below. As a best practice to ensure customers have the latest protections, we recommend they upgrade to the most current versions.

Today, we released security updates to provide additional protections against malicious attackers. By default, Windows 10 receives these updates automatically, and for customers running previous versions, we recommend they turn on automatic updates as a best practice. More information about this month’s security updates can be found on the Security Update Guide.

Today’s security updates include three updates that exemplify how the security ecosystem can come together to help protect consumers and enterprises. We would like to thank FireEye and ESET for working with us. Customers that have the latest security updates installed are protected against the attacks described below. As a best practice to ensure customers have the latest protections, we recommend they upgrade to the most current versions.

Information modeling blends lateral thinking and deductive logic. Applied to information security, it’s a powerful technique for designing a security architecture with multi-dimensional controls that minimizes risk and achieves continuous compliance.

New information sheds light on Sabu’s activities following the revelation of his identity.

When you feel like you’re losing the security battle, try one, a few, or all of these tips to re-invigorate your program and stay on a positive track.

Even URLs that look legitimate can be fake, so train, train, train your users to verify links before they click.

快看~~ js也能报洞了~~

Your company could lose hundreds of thousands in an impersonation scam, but here are eight things you can do to protect yourself.

这word有毒~

One of the big features in today’s Internet-of-Things-centric world is the ability to effortlessly track and record health-related data. In...

The post Report Finds Some Health Apps Aren’t Healthy for Your Privacy appeared first on McAfee Blog.

Notorious hacker of Anonymous and LulzSec fame is challenged by rival hacker, The Jester, to reveal his identity.