Blog Archives

Log Analysis for System Troubleshooting

Systems of all kinds create log data constantly and voluminously. In searching out the most compelling reasons to dig into and analyze such data, we compiled a list of seven reasons that usually drive such activity. In this blog post… Read More

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Posted in Log Analysis, Log Management, Monitoring, Server monitoring

Logging for Fun: Things You’d Never Thought to Log

I work as a consultant in the software industry.  This work affords me the opportunity to see and interact with many different teams and thus to observe prevailing trends.  Among these teams, the attitude toward logging tends to be one… Read More

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Posted in IoT, Log Analysis, Log Management, Monitoring

Logs To Understand User Activity and Behavior

Logging user activity is a great way to understand what users are doing, and how they are using network and computing resources. Collecting data from the standpoint of a user identity or login is a great way to correlate all… Read More

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Posted in Log Analysis, Security

The Value of Correlation IDs

In the old days when transactional behavior happened in a single domain, in step-by-step procedures, keeping track of request/response behavior was a simple undertaking. However, today one request to a particular domain can involve a myriad of subsequent asynchronous requests… Read More

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Posted in Application Performance Monitoring, Development, Log Analysis, Log Management, Server monitoring, Web

Using Log Data as Forensic Evidence

Working with computer logs is something of an ongoing adventure in discovery. The data from such logs is amenable to many uses and applications, particularly when it comes to monitoring and maintaining security. But even after a security breach or… Read More

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Posted in Log Analysis, Log Management, Monitoring, PCI, Security

Widely-used Android App Leaks MS Exchange Credentials

In October, Rapid7 researchers uncovered a significant vulnerability in the Nine mobile application for Android. Baldly stated, this app leaks Microsoft Exchange user credentials, plus mail envelopes and attachments, mailbox synchronization data, caleandar entries and tasks to attackers. It has… Read More

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Posted in Log Analysis, Log Management, Logentries, Monitoring, Security

Empowering Leexportpy with new services

In previous posts of this series, we have gone through how leexportpy works, how it is configured and currently supported services for transforming and pushing Logentries Query API data to other systems. When it comes to creating a new service… Read More

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Posted in API, Application Performance Monitoring, Data visualization, Development, How To, LEQL, Log dashboards, Log Management, Logentries, Scripts

Overview of ‘online’ algorithm using Standard Deviation example

Here at Logentries we are constantly adding to the options for analysing log generated data. The query language ‘LEQL’ has a number of statistical functions and a recent addition has been the new Standard Deviation calculation.
LEQL query example
where(image=debian)… Read More

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Posted in Data visualization, LEQL, Log Analysis

Logging OwnTracks to Logentries

A previous blog showed how MQTT logs can be sent to Logentries for storage, analysis and how those logs can be to alert on potential MQTT security threats, as well as to store and visualize sensor data. This blog follows… Read More

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Posted in Data visualization, How To, IoT, JSON, LEQL, Log Analysis, Logentries, Mobile Apps, Monitoring

Logging Mosquitto Server logs (from Raspberry Pi) to Logentries

The Internet is evolving and part of this is the emerging Internet of Things (IoT). IoT allows us to use the Internet to seamlessly connect the cyberspace and real world using physical sensors at huge scale, allowing us to gather… Read More

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Posted in How To, IoT, Log Analysis, Log dashboards, Log Management, Logentries, Monitoring, Server monitoring

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