Web Scraping For Dummies



An electronic book, also known as an e-book or eBook, is a book publication made available in digital form, consisting of text, images, or both, readable on the flat-panel display of computers or other electronic devices. Pd.getdummies(train'Sex') What we can do is to remove the first column because one column indicates the value of the other column. For example, if the male is 1, then the female will be 0 and vice versa. Welcome to the most interesting (and fun!) blog post on web scraping for dummies. Mind you, this is not a typical web scraping tutorial. You will learn the whys and hows of data scraping along with a few interesting use-cases and fun facts. Learn how to get started with retrieving content automatically from the web with these techniques and tools of the trade. Note that this video is not meant.

A court-approved FBI operation was conducted to remove web shells from compromised US-based Microsoft Exchange servers without first notifying the servers' owners.

On March 2nd, Microsoft released a series of Microsoft Exchange security updates for vulnerabilities actively exploited by a hacking group known as HAFNIUM.

These vulnerabilities are collectively known as ProxyLogon and were used by threat actors in January and February to install web shells on compromised Exchange servers. These web shells provided remote access to the servers where threat actors used them to exfiltrate email and accounts credentials.

Over the following weeks, government agencies released guidance, and Microsoft released a variety of scripts and tools to help victims determine if they had been compromised and remove web shells.

Web Scraping For Dummies

Simultaneously, other threat actors began using the Microsoft Exchange vulnerabilities to install ransomware, cryptominers, and further web shells.

FBI uses search warrant to remove web shells

In a Department of Justice press release published today, the FBI states they used a search warrant to access the still-compromised Exchange servers, copy the web shell as evidence, and then remove the web shell from the server.

The FBI requested this warrant because they believed that the owners of the still-compromised web servers did not have the technical ability to remove them on their own and that the shells posed a significant risk to the victim.

'Based on my training and experience, most of these victims are unlikely to remove the remaining web shells because the web shells are difficult to find due to their unique file names and paths or because these victims lack the technical ability to remove them on their own,' the FBI stated in an affidavit in support of a search warrant.

As there was concern that notifying the owners of these servers could compromise the operation, the FBI requested that the warrant be sealed and that notification of the warrant be delayed until the operation was finished.

'Accordingly, the United States requests approval from the Court to delay notification until May 9, 2021, 30 days from the first possible date of execution on April 9, 2021, or until the FBI determines that there is no longer need for delayed notice, whichever is sooner,' the affidavit requested.

They further requested permission to search at any time of the day to avoid detection by threat actors.

'Because accessing such computers at all times will allow the government to minimize the likelihood of the actors’ detection and deployment of countermeasures that could frustrate the authorized search, good cause exists to permit the execution of the requested warrant at any time in the day or night,' states the affidavit.

To clean the identified Microsoft Exchange servers, the FBI accessed the web shell using known passwords utilized by the threat actors, copied the web shell as evidence, and then executed a command to uninstall the web shell from the compromised server.

'FBI personnel will access the web shells, enter passwords, make an evidentiary copy of the web shell, and then issue a command through each of the approximately web shells to the servers to delete the web shells themselves,' the FBI explained in the affidavit.

A court in Houston granted the search warrant on April 9th and permitted the FBI to remove web shells from the listed Exchange Server over the next 14 days. The court also allowed the FBI to delay providing notice to the Exchange Servers' owners being searched.

For

The DOJ press release states that the FBI operation was successful and that they could remove hundreds of web shells from compromised US Exchange Servers.

However, the FBI states that the operation only removed web shells and did not apply security updates or remove any other malware that threat actors may have installed on the server.

The FBI is now in the process of notifying victims whose Exchange servers were accessed during the operation. The FBI will send these notifications via email from an official FBI.gov email account, or if contact information is not available, by using a service provider (ISP) to contact the victim.

Related Articles:

Web Scraping For Dummies

Description:

Web Scraping For Dummies Pdf

From data sciences to app development, data extraction is the most necessary ingredient in today's world. Everybody in software, hardware and computer science research require data in some form or the other. The challenge is to extract and accumulate relevant and useful data. Hitherto, it is a must for everyone to have a basic working idea of data extraction from the web.

Is Web Scraping Easy

In this session we will discuss how web scraping is helpful in handling our data extraction issues and how easily this can be achieved using 'BeautifulSoup'. We will discuss web scraping from scratch and also run sample code for proper visualization of the techniques we will be demonstrating. People without prior knowledge of BeautifulSoup can easily grasp the demonstrated techniques. A working knowledge of HTML and Python will just be required and absolutely nothing else. We will wrap up our session with an overview of how Selenium can be used in web scraping, in order that the audience have an overall and complete overview of web scraping as a whole. For this basic knowledge of Selenium is good enough.

Websites For Dummies

We plan to keep our session lucid, comprehensible and most importantly simple, so that the audience can take back a working knowledge of web scraping. We will be exhibiting sample code for better understanding at each step.





Comments are closed.