Acelere sua jornada SSE. Junte-se à Netskope na RSA.

  • Produtos de Serviço de Segurança Edge

    Proteger-se contra ameaças avançadas e com nuvens e salvaguardar os dados em todos os vetores.

  • Borderless SD-WAN

    Confidentemente, proporcionar acesso seguro e de alto desempenho a cada usuário remoto, dispositivo, site, e nuvem.

  • Plataforma

    Visibilidade incomparável e proteção de dados e contra ameaças em tempo real na maior nuvem privada de segurança do mundo.

Netskope é nomeada Líder no Relatório do Quadrante Mágico™ do Gartner de 2022 para SSE

Obtenha o Relatório Vá para a plataforma
Netskope gartner mq 2022 sse leader
Resposta rápida da Gartner®: como a aquisição da Infiot pela Netskope impacta projetos de SD-WAN, SASE e SSE?

Obtenha o Relatório
Gartner quick answer
A Netskope oferece uma pilha de segurança na nuvem moderna, com capacidade unificada para proteção de dados e ameaças, além de acesso privado seguro.

Explore a nossa plataforma
Birds eye view metropolitan city
Mude para serviços de segurança na nuvem líderes de mercado com latência mínima e alta confiabilidade.

Saiba mais
Lighted highway through mountainside switchbacks
Previna ameaças que muitas vezes contornam outras soluções de segurança usando uma estrutura SSE de passagem única.

Saiba mais
Lighting storm over metropolitan area
Soluções de zero trust para a implementação de SSE e SASE

Saiba mais
Boat driving through open sea
A Netskope permite uma jornada segura, inteligente e rápida para a adoção de serviços em nuvem, aplicações e infraestrutura de nuvem pública.

Saiba mais
Wind turbines along cliffside
  • Nossos clientes

    Netskope atende a mais de 2.000 clientes em todo o mundo, incluindo mais de 25 dos 100 da Fortune.

  • Customer Solutions

    Estamos aqui junto com você a cada passo da sua trajetória, assegurando seu sucesso com a Netskope.

  • Treinamento e certificação

    Os treinamentos da Netskope vão ajudar você a ser um especialista em segurança na nuvem.

Ajudamos nossos clientes a estarem prontos para tudo

Ver nossos clientes
Woman smiling with glasses looking out window
A talentosa e experiente equipe de Serviços Profissionais da Netskope fornece uma abordagem prescritiva para sua implementação bem sucedida.

Saiba mais
Netskope Professional Services
Proteja sua jornada de transformação digital e aproveite ao máximo seus aplicativos de nuvem, web e privados com o treinamento da Netskope.

Saiba mais
Group of young professionals working
  • Recursos

    Saiba mais sobre como a Netskope pode ajudá-lo a proteger sua jornada para a nuvem.

  • Blog

    Saiba como a Netskope viabiliza a segurança e a transformação de redes através do security service edge (SSE).

  • Eventos e workshops

    Esteja atualizado sobre as últimas tendências de segurança e conecte-se com seus pares.

  • Security Defined

    Tudo o que você precisa saber em nossa enciclopédia de segurança cibernética.

Podcast Security Visionaries

Episódio 10: Construindo relacionamentos de segurança por meio da transparência
In this episode, Mike and Andreas discuss aligning with works councils, forging business relationships through transparency, and embedding security into value streams.

Reproduzir o podcast
Building Security Relationships Through Transparency
Leia as últimas novidades sobre como a Netskope pode viabilizar a jornada Zero Trust e SASE por meio dos recursos do security service edge (SSE).

Leia o Blog
Sunrise and cloudy sky
Netskope at RSA

Join Netskope at RSA Conference this year and be part of the real conversations on SASE and Zero Trust. Stop by our booth in South Hall, chat with an expert, register for our speaking sessions, and unwind by joining us at one of our events!

Saiba mais
RSA logo
O que é o Security Service Edge?

Explore o lado de segurança de SASE, o futuro da rede e proteção na nuvem.

Saiba mais
Four-way roundabout
  • Empresa

    Ajudamos você a antecipar os desafios da nuvem, dos dados e da segurança da rede.

  • Por que Netskope

    A transformação da nuvem e o trabalho em qualquer lugar mudaram a forma como a segurança precisa funcionar.

  • Liderança

    Nossa equipe de liderança está fortemente comprometida em fazer tudo o que for preciso para tornar nossos clientes bem-sucedidos.

  • Parceiros

    Fazemos parceria com líderes de segurança para ajudá-lo a proteger sua jornada para a nuvem.

A Netskope possibilita o futuro do trabalho.

Saiba mais
Curvy road through wooded area
A Netskope está redefinindo a nuvem, os dados e a segurança da rede para ajudar as organizações a aplicar os princípios de Zero Trust para proteger os dados.

Saiba mais
Switchback road atop a cliffside
Pensadores, construtores, sonhadores, inovadores. Juntos, fornecemos soluções de segurança na nuvem de última geração para ajudar nossos clientes a proteger seus dados e seu pessoal.

Conheça nossa equipe
Group of hikers scaling a snowy mountain
A estratégia de comercialização da Netskope, focada em Parcerias, permite que nossos Parceiros maximizem seu crescimento e lucratividade enquanto transformam a segurança corporativa.

Saiba mais
Group of diverse young professionals smiling

Surprise! Nine “Must-Dos” to Protect Against Malware in Remote Support Apps

Mar 24 2016
Tags
Cloud Best Practices
Netskope Cloud Report
Vulnerability Advisory

Earlier this week, a Bleeping Computer article described a new ransomware that researchers are calling Surprise that is propagated by online support app, TeamViewer. According to TeamViewer’s website, the app is installed in more than 90 percent of the Fortune 500 and has been installed on more than one billion devices worldwide. Netskope recently surfaced TeamViewer in the Netskope Cloud Report as an app that has posted triple-digit growth in the past year and is in the rapidly-expanding Microsoft 365 ecosystem.

How It Happens

According to the article, the Surprise ransomware developer was able to co-opt the credentials of a TeamViewer user, and then used those credentials to gain access to other TeamViewer users and download the malware file via TeamViewer.

Specifically, there are three different communications that are happening in this scenario. The first is from user 1 (the person delivering remote support) to the TeamViewer console. The second is user 2 (the recipient of the remote support) to the TeamViewer console. Finally, once the two parties connect to the TeamViewer console, TeamViewer puts the two users in communication using a peer-to-peer networking protocol. That connection is used for user 1 to access and deliver support to user 2’s machine, with the ability to deliver files, including Surprise ransomware. The article elaborates that the executable file doesn’t contain encryption functions or other malicious-seeming behaviors, so they have been able to evade both anti-virus and behavioral anti-malware products. We see TeamViewer used in more than half of all of our Netskope tenants, and have issued a Customer Advisory with instruments for protecting themselves against this threat.

Another Backoff?

Since US CERT issued this Advisory pointing to remote access and control apps, including LogMeIn and JoinMe, as being used by hackers to gain access to corporate networks (especially in retail, restaurants, and other industries with highly distributed systems where branch networks depend heavily on centralized IT support models) to install the infamous Backoff malware (responsible for some of the most egregious data breaches in history), Netskope has been advising our customers to find and understand all such apps that are accessing their remote branches, and put proper authentication and auditing technologies and procedures in place to prevent unauthorized access and be able to produce forensic audit trails in the case of a suspected breach. TeamViewer and ransomware looks an awful lot like the Backoff distribution model, except instead of stealing POS data, the ransomware developers are holding corporate data for ransom. Because of the necessity of remote support apps in distributed businesses, this threat is especially insidious!

The Malware Fan-out Effect Strikes Again

In addition to looking like Backoff, we noticed another thing about these attacks: They are a variation of the cloud malware attack fan-out effect we’ve been talking about in the news and at our keynote at the Aliança de segurança na nuvem Summit and RSA Conference last month. The fan-out is what happens when malware travels via sync and share in cloud apps. Beyond malware propagating in the cloud, we saw the effect of malware traveling in the cloud, where a ransomware victim would have his files encrypted, then those encrypted files synced to the cloud, then other users who were also synced to those same cloud folders had their files encrypted, and so on. Even though the example here is ransomware, the malware payload itself travels via the TeamViewer app, and then the encryption happens post-infection.

Nine Must-Dos if You Think Your Organization is at Risk

If you are using a Cloud Access Security Broker (CASB), you should take the following actions. We use Netskope screenshots to demonstrate below: 

  • Find out whether you have TeamViewer running in your environment. If you are using Netskope, you can simply query on the app. Also, find other remote support (and remote access) apps in your environment.
Slide1
  • Understand which users are accessing TeamViewer, and what that access looks like.
Slide2
  • Cross-check users against compromised credentials threat intelligence to understand whether users’ TeamViewer accounts may have been hacked. Isolate and disable hacked users’ accounts. Prompt all TeamViewer users and users with other compromised accounts to update passwords on all business-critical cloud apps.
Slide3
  • Put all TeamViewer users on a watch list and use machine learning-based anomaly detection to find unusual activity.
Slide4
  • Consider temporarily blocking TeamViewer to prevent users from infection via this app.
Slide5
  • As a preventive measure, scan for and remediate malware in other business-critical cloud apps.
Slide6

Beyond actions you can take in CASB, we also recommend doing the following:

  • Back up versions of your critical content in the cloud. Enable your app’s “trash” feature and adjust the settings to prevent end users from permanently deleting a file for 30 days so the admin has visibility into files that users are putting into trash. Only a co-admin should have the right to perform a deletion earlier. This will ensure you have a version of your content available should your files become encrypted in a ransomware attack.
  • Put multi-factor authentication in place for TeamViewer (and all remote support/remote access apps that access your network). Also, consider bringing these apps under your single sign-on (SSO) management umbrella.
  • Make sure that the people inside your network are only accessing sanctioned remote access tools that you know you have protections for in your enterprise.

Please also see TeamViewer’s commentary and recommendations for protecting against ransomware infections via TeamViewer.