How to act on company-wide malware infestation

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A colleague left and I have been entrusted with the security of the company. Checking an initial status I found that the machines are infested with viruses and there are multiple port scans and brute force attacks that are showing on the firewall between all the machines of the company towards other LAN machines. This problem is on servers and client computers.



I am overwhelmed by 900 daily alerts that I am unable to handle, and I need to give a solution to the problem.



I have previous experience with antivirus consoles, but I don’t know how to manage this infestation problem that seems that our current antivirus "Endpoint protection" can’t handle.



Any ideas of how to get out of this headache?







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    up vote
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    favorite
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    A colleague left and I have been entrusted with the security of the company. Checking an initial status I found that the machines are infested with viruses and there are multiple port scans and brute force attacks that are showing on the firewall between all the machines of the company towards other LAN machines. This problem is on servers and client computers.



    I am overwhelmed by 900 daily alerts that I am unable to handle, and I need to give a solution to the problem.



    I have previous experience with antivirus consoles, but I don’t know how to manage this infestation problem that seems that our current antivirus "Endpoint protection" can’t handle.



    Any ideas of how to get out of this headache?







    share|improve this question
























      up vote
      2
      down vote

      favorite
      1









      up vote
      2
      down vote

      favorite
      1






      1





      A colleague left and I have been entrusted with the security of the company. Checking an initial status I found that the machines are infested with viruses and there are multiple port scans and brute force attacks that are showing on the firewall between all the machines of the company towards other LAN machines. This problem is on servers and client computers.



      I am overwhelmed by 900 daily alerts that I am unable to handle, and I need to give a solution to the problem.



      I have previous experience with antivirus consoles, but I don’t know how to manage this infestation problem that seems that our current antivirus "Endpoint protection" can’t handle.



      Any ideas of how to get out of this headache?







      share|improve this question














      A colleague left and I have been entrusted with the security of the company. Checking an initial status I found that the machines are infested with viruses and there are multiple port scans and brute force attacks that are showing on the firewall between all the machines of the company towards other LAN machines. This problem is on servers and client computers.



      I am overwhelmed by 900 daily alerts that I am unable to handle, and I need to give a solution to the problem.



      I have previous experience with antivirus consoles, but I don’t know how to manage this infestation problem that seems that our current antivirus "Endpoint protection" can’t handle.



      Any ideas of how to get out of this headache?









      share|improve this question













      share|improve this question




      share|improve this question








      edited Aug 18 at 23:33









      schroeder♦

      62.8k23136170




      62.8k23136170










      asked Aug 18 at 22:56









      kimo pryvt

      1241410




      1241410




















          2 Answers
          2






          active

          oldest

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          up vote
          6
          down vote



          accepted










          Two things come to mind.



          1. Isolate as much of your network as you can into zones and tackle each zone on its own. Set up firewall rules to prevent any incoming connections to any device that is not expecting it. Start with the machines that contain your most precious info.

          And by "handle it", I mean nuke each machine and rebuild from known good backups.



          1. Get help. You might need to pay for extra hands.





          share|improve this answer



























            up vote
            2
            down vote













            You may be out of your depth here.If this is the case you need to go to management and ask they open the coffers for professional external help as you are in over your head.



            Running AV and nuking all the machines will not guarantee a clean environment if you do not know what to look for or more importantly how they got into your environment in the first place.






            share|improve this answer




















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              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes








              up vote
              6
              down vote



              accepted










              Two things come to mind.



              1. Isolate as much of your network as you can into zones and tackle each zone on its own. Set up firewall rules to prevent any incoming connections to any device that is not expecting it. Start with the machines that contain your most precious info.

              And by "handle it", I mean nuke each machine and rebuild from known good backups.



              1. Get help. You might need to pay for extra hands.





              share|improve this answer
























                up vote
                6
                down vote



                accepted










                Two things come to mind.



                1. Isolate as much of your network as you can into zones and tackle each zone on its own. Set up firewall rules to prevent any incoming connections to any device that is not expecting it. Start with the machines that contain your most precious info.

                And by "handle it", I mean nuke each machine and rebuild from known good backups.



                1. Get help. You might need to pay for extra hands.





                share|improve this answer






















                  up vote
                  6
                  down vote



                  accepted







                  up vote
                  6
                  down vote



                  accepted






                  Two things come to mind.



                  1. Isolate as much of your network as you can into zones and tackle each zone on its own. Set up firewall rules to prevent any incoming connections to any device that is not expecting it. Start with the machines that contain your most precious info.

                  And by "handle it", I mean nuke each machine and rebuild from known good backups.



                  1. Get help. You might need to pay for extra hands.





                  share|improve this answer












                  Two things come to mind.



                  1. Isolate as much of your network as you can into zones and tackle each zone on its own. Set up firewall rules to prevent any incoming connections to any device that is not expecting it. Start with the machines that contain your most precious info.

                  And by "handle it", I mean nuke each machine and rebuild from known good backups.



                  1. Get help. You might need to pay for extra hands.






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Aug 18 at 23:37









                  schroeder♦

                  62.8k23136170




                  62.8k23136170






















                      up vote
                      2
                      down vote













                      You may be out of your depth here.If this is the case you need to go to management and ask they open the coffers for professional external help as you are in over your head.



                      Running AV and nuking all the machines will not guarantee a clean environment if you do not know what to look for or more importantly how they got into your environment in the first place.






                      share|improve this answer
























                        up vote
                        2
                        down vote













                        You may be out of your depth here.If this is the case you need to go to management and ask they open the coffers for professional external help as you are in over your head.



                        Running AV and nuking all the machines will not guarantee a clean environment if you do not know what to look for or more importantly how they got into your environment in the first place.






                        share|improve this answer






















                          up vote
                          2
                          down vote










                          up vote
                          2
                          down vote









                          You may be out of your depth here.If this is the case you need to go to management and ask they open the coffers for professional external help as you are in over your head.



                          Running AV and nuking all the machines will not guarantee a clean environment if you do not know what to look for or more importantly how they got into your environment in the first place.






                          share|improve this answer












                          You may be out of your depth here.If this is the case you need to go to management and ask they open the coffers for professional external help as you are in over your head.



                          Running AV and nuking all the machines will not guarantee a clean environment if you do not know what to look for or more importantly how they got into your environment in the first place.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Aug 21 at 0:12









                          McMatty

                          1,7611112




                          1,7611112






















                               

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