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如何確認您的電腦設備可能被駭客入侵

全球網路犯罪分子每年因人們的誤點網路釣魚連結、重要軟體忘記更新以及沒有使用雙重身份驗證 (MFA)等行為而賺取數萬億美元,他們藉由不同的攻擊媒介,竊取帳號資料,或透過各種工具、網路犯罪行為及不法網站等,來取得交易訊息;且潛伏的時間越長,造成的損失就越大,後果可能也就越昂貴,因此,如能越早發現越好,所以主動進行一些確認或檢查也是有其道理的。據FBI指出,去年(2021年)有847,000家企業和消費者遭遇網路犯罪事件,損失金額近70億美元,ESET資安專家提醒千萬不要為時已晚才採取行動。

如果不想成為網路犯罪的受害者,請留意以下十個跡象,代表您的電腦設備可能已被駭客入侵:

1.您收到勒索軟體訊息
最顯而易見的是,當您開機時不是出現一般的啟動畫面,而是看到勒索訊息,那麼您很有可能已成為勒索軟體的受害者了,它通常會給一個很短的支付時限及說明如何支付贖金,但不幸的是,即便您確實遵守了指示,也有三分之一的機會無法重新獲得這些加密文件的存取權限。

2.電腦跑很慢
當惡意軟體(包括特洛伊木馬、蠕蟲和加密貨幣挖礦)植入於電腦設備時,它們通常會使運行變慢,尤其是加密劫持攻擊,它會佔用大量的效能,當然電腦跑很慢不全然是惡意因素所造成,也有可能是電腦設定不佳等問題。

3.視訊鏡頭自行開啟
駭客使用的一些間諜軟體除了可以取得您在電腦設備的資料外,還能偷偷打開視訊鏡頭和麥克風,藉由這樣記錄和竊取您和您家人的視頻,進而用於勒索,所以請密切留意視訊鏡頭,檢查它是否會自行開啟,ESET資安專家建議最好利用貼布貼住,來確保不會使用到它。

4.您的朋友收到來自您電子信箱的不明郵件
還有一個證明您的電腦設備已被入侵的指標是,如果您的朋友和客戶開始收到來自您的不明電子郵件或社交媒體帳戶的垃圾郵件;典型的網路釣魚就是劫持受害者的​​帳戶,然後向他們的所有朋友發送垃圾郵件或網路釣魚。若所有帳戶都有使用雙重身份驗證(MFA)的機制,則可以輕鬆緩解這種威脅。

5. 頻繁地彈出視窗
廣告軟體通常透過受害者接觸過多的廣告量來讓攻擊者賺錢,因此,如果您的電腦頻繁地彈出式廣告,這代表某處可能安裝了一些惡意代碼或可能不需要的軟體。

6.工具列突然出現新的圖標
惡意軟體還可能在您的瀏覽器上安裝其他工具列,如果您發現任何您不認識或不記得下載的內容,則可能意味著您的電腦設備已被駭客入侵;如果您遇到 APT 團體的惡意軟體攻擊,則可能需要將您的電腦設備恢復至出廠設定才能將其刪除,若是PUA (Potentially Unwanted Application,潛在有害應用程式)的話,只要刪除應用程式和工具列就可以了。

7.出現隨機圖標
當惡意軟體安裝在受感染的電腦設備時,通常會出現新的桌面圖標,只要桌面整齊地排列成少量的文件、文件夾和程式,就可以輕易發現。ESET資安專家建議整理一下電腦桌面,以便更好地追踪電腦設備上的圖標。

8.密碼無法使用/無法登錄
如果駭客入侵了您的電腦設備,他們很有可能已經劫持了各種在線帳戶,例如您的電子郵件,並更改了密碼,將您拒之門外,這也是所有網路攻擊中最嚴重的情況之一。

9.個資和登錄資訊在暗網流通
如果您收到與您有業務往來公司之資料外洩通知,請務必嚴肅看待並在可以提供第三方確認任何違規行為,如HaveIBeenPwned之類的網站進行驗證。另外利用暗網監控工具還可以在網路犯罪的相關論壇搜索您的資料,以更主動的方式來了解您的個資和登錄資訊之暗網流通狀況。還有若您能迅速進行更改密碼、凍結信用卡等行為,也可以降低被駭客利用或攻擊的風險。

10.您收到來自防毒軟體的警告
來自反惡意軟體工具的警告也應慎重看待,儘管耳聞有假冒的電腦防毒軟體彈跳視窗,但仍請確認訊息是否來自於您購買的電腦防毒軟體供應商,並按照說明嘗試查找並刪除您電腦設備上的惡意文件。

#若有任何資安需求,歡迎洽詢台灣二版資安專業團隊,服務電話:(02)7722-6899,或上官網查詢:https://version-2.com.tw/

原文出處:https://www.welivesecurity.com/2022/08/09/howto-check-hacked-pc/

關於ESET
ESET成立於1992年,是一家面向企業與個人用戶的全球性的電腦安全軟體提供商,其 獲獎產品——NOD32防病毒軟體系統,能夠針對各種已知或未知病毒、間諜軟體 (spyware)、rootkits和其他惡意軟體為電腦系統提供實時保護。ESET NOD32佔用 系統資源最少,偵測速度最快,可以提供最有效的保護,並且比其他任何防病毒產品獲 得了更多的Virus Bulletin 100%獎項。ESET連續五年被評為“德勤高科技快速成長500 強”(Deloitte’s Technology Fast 500)公司,擁有廣泛的合作夥伴網絡,包括佳 能、戴爾、微軟等國際知名公司,在布拉迪斯拉發(斯洛伐克)、布里斯托爾(英國 )、布宜諾斯艾利斯(阿根廷)、布拉格(捷克)、聖地亞哥(美國)等地均設有辦事 處,代理機構覆蓋全球超過100個國家。

關於 Version 2 Digital
資安解決方案 專業代理商與領導者
台灣二版 ( Version 2 ) 是亞洲其中一間最有活力的 IT 公司,多年來深耕資訊科技領域,致力於提供與時俱進的資安解決方案 ( 如EDR、NDR、漏洞管理 ),工具型產品 ( 如遠端控制、網頁過濾 ) 及資安威脅偵測應 變服務服務 ( MDR ) 等,透過龐大銷售點、經銷商及合作伙伴,提供廣被市場讚賞的產品及客製化、在地化的專業服務。

台灣二版 ( Version 2 ) 的銷售範圍包括台灣、香港、中國內地、新加坡、澳門等地區,客戶涵 蓋各產業,包括全球 1000 大跨國企業、上市公司、公用機構、政府部門、無數成功的中小企業及來自亞 洲各城市的消費市場客戶。

監控即服務:人才短缺的替代方案

There is quite a wide range of solutions offered by monitoring as a service to any company, from performing any analysis to detect the root cause of the issue to determining the path of the failure.

Here goes…

Our opinion on monitoring as a service

One of the most important and obvious benefits it brings to the table is that it solves training problems of workers involved or just solves the shortage of talent of these workers right away. 

It may sound a bit harsh… but it is what it is. 

The increase in the amount of information available in companies, and the obligation to be able to manage this IT structure well means that workers must constantly be better qualified.

In addition, the increasing importance of IT means that infrastructure managers have a certain amount of work overload. 

Something that with a monitoring system does not happen! 

Rather the other way around, monitoring as a service establishes a theoretical bridge between technology and business, drawing a scheme where you can easily detect where the source of the problem is, saving time and actions to the operating team.

Monitoring reduces the importance of the traditional involvement of people from different areas of the organization and the work overload that managers in this process may have. 

To sum up, monitoring systems control all data and allow access to information from the same platform, avoiding that those in charge of this area have to stay aware of several fronts without fully concentrating on a single one. 

Also inactivity cost is reduced!

Let’s get to the point!

“You must take into account that the transformation of a given company implies that there is more software. 

And, therefore, more business areas that depend on technology. A series of changes that imply the need to hire more competent profiles. 

Everything with the aim for all pieces to fit perfectly, both the computer and its software as well as the network and the technician who handles it “

Explains Sancho Lerena, CEO of Pandora FMS, as you surelyl know, an international reference in monitoring.

An example of this need is that the growth of hybrid infrastructures is 25% per year according to IDC data. 

For that reason, many companies are taking their chances on taking out their IT monitoring infrastructure to save money and especially time.

This process of getting the entire IT organization under the umbrella of the same system also helps the infrastructure manager, as they have higher capacity to manage its records. 

On the one hand, it collects all the data despite the fact that it is a large volume. 

And, secondly, it concentrates access to all that information on a single centralized console.

In conclusion, we get over the lack of time for the worker to be aware of fundamental tasks such as security or data management. 

It also gets rid of the possible lack of capacity to adapt to the different operating systems that may exist in the same company. 

And, lastly, the workload involved in facing a constant data flow where any minimal error must be detected is minimized. 

Systems such as Splunk, Datadog or Pandora FMS itself help in the process.

Conclusions

Through monitoring, it is possible to use information in a reactive way, anticipating problems and alerts received; preventive, since analyses are obtained that help to be prepared for any worst-case scenario; and retrospective, since the emerged crises are also studied to find out the extent of their impact and know how to take measures properly in the future.

About Version 2 Digital

Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

About PandoraFMS
Pandora FMS is a flexible monitoring system, capable of monitoring devices, infrastructures, applications, services and business processes.
Of course, one of the things that Pandora FMS can control is the hard disks of your computers.